After 10 years, we are rebuilding our whole setup. That includes moving artist accounts onto a new infrastructure.
There are around 500,000 accounts to move, and we are doing it carefully so your data stays safe. It is a slow job.
It may take a few weeks while we work through everyone.
No. We still have a record of your orders.
Shipping updates: UK/EU & US
Yes. We have upgraded our UK sending setup with more robust systems for EU orders.
When the new US tariffs came in, a lot of orders were held up and returned. That caused a big backlog.
We now have a space sending orders out directly from the US, which should make things smoother.
Yes. Our first space was on Grade Lane and ended up in the crash site last November. None of our team were hurt, but the disruption took months to work through.
Shipping details
Yes. Orders over £85 ship free to the UK, USA, and EU. Orders over £150 ship free everywhere else. Flat rate options are also available at checkout.
North American orders ship from our US studio in Kentucky. All other orders ship from the UK.
Allow up to two weeks depending on your location. A fast track option is available at checkout if you need it sooner.
All materials are handmade by a team of artists in England using the world's best ingredients.
No. US orders ship domestically from our US studio in Kentucky, so there are no import duties or customs fees for customers in North America.
For a single paint: 3213900000. For sets (like Phaze, etc.): 3213100000.
Unfortunately we are not able to send orders to PO Box addresses. Our carriers require a full street address to generate a shipping label. If you have entered a PO Box at checkout, get in touch and we will sort it out before your order ships.
Black 4.0
Black 4.0 is our ultra-matte black paint. It is so black it eats light and looks like a velvet void, absorbing over 99% of visible light.
Black 3.0 was exciting but could be unstable. Painted too thick, it could trap moisture and form salty white crystals. Black 4.0 fixes those issues and gives deeper, more stable coverage. Black 3.0 is now discontinued.
Yes, it is Black 4.0 inside.
Black 4.0 needs a specific type of bottle because of the experimental materials in the formula. We had already made a big run of those bottles back when Black 3.0 was the current design, so they were printed with Black 3.0 artwork.
When Black 4.0 launched, we kept using those same bottles and added the correct Black 4.0 artwork on top. It saves perfectly good packaging from being scrapped, and it means you still get the right bottle for the paint.
We are not selling Black 3.0 as Black 4.0. Black 3.0 is discontinued and any remaining Black 3.0 stock is solid, so it is not being bottled or shipped.
People have, but it is not a permanent outdoor paint. To keep the ultra-matte look, the surface needs to stay unsealed, so outdoors or on cars it will wear or fade over time. You can retouch it. It is best for indoor work, temporary finishes, shows, and experiments.
No. Any varnish, resin, or coating adds shine and ruins the effect. The void only works when the surface stays completely unsealed.
Use a soft synthetic brush (Liquitex Freestyle, Pro-Arte Sterling, Coltman or Cryla).
Apply very thin, even coats and let each coat dry fully before the next, at least 2 hours (overnight is best).
Prep porous surfaces with a 25% PVA + 75% water seal first.
Prep shiny or slick surfaces with Black 2.0 or a matte primer.
Thin only with a little water. Don't use flow additives or mediums that add shine.
It works on canvas, card, wood, paper, plaster, stone, foam, and most primed surfaces. Porous surfaces need a PVA seal first. Shiny or slick surfaces need Black 2.0 or a matte primer first.
60ml covers approximately 1 square metre. 150ml covers approximately 2 square metres, applying thin even coats.
Yes. It is non-toxic, vegan-friendly, and water-based. It is not edible and not fire-retardant, but it is perfectly safe to use as an art material with normal studio ventilation.
Black 4.0 is not flammable. It is no more risky than any other black paint. Avoid exposing it to temperatures above boiling point. If the surface it is painted on is flammable (like styrofoam), that is the surface to be careful about, not the paint.
No. Black 4.0 is the world's blackest PAINT. Vantablack is a lab-grown nanotube structure, not a paint. Stuart made Black 4.0 specifically so every artist could have access to a proper ultra-black. Anish Kapoor is banned from using it.
Anish Kapoor secured exclusive artist rights to Vantablack. Stuart made Black 4.0 for every artist, except Kapoor.
Usually this means the coat was too thick, or applied over a shiny surface without a primer. Stuart has a video showing exactly how to use it: watch it here. If it still looks wrong, get in touch and we'll help.
Yes. Add a retarder medium to slow drying time so it doesn't clog the screen. It will work for many editions. The retarder may slightly reduce the matte depth, but used sparingly it will still give you a strong result.
It contains a tiny amount of carbon. It is not really conductive but if you are working on sensitive electronics, we would not recommend it for those specific applications.
We don't have a formal VOC certificate, but as it is water-based it will be low VOC.
You can experiment with it. Mix in small batches and work fast as the reaction can set quickly. The results can be interesting but inconsistent, so test patches first.
Black 2.0
Black 2.0 is the flattest, mattest black paint available to artists. It is not as light-absorbing as Black 4.0, but it produces a uniquely ultra-flat finish with no surface reflection at all.
No. Black 2.0 is fragile and not waterproof. It will get damaged outdoors and near water. There is no clear varnish matte enough to protect it without ruining the effect.
No. Epoxy resin will damage it. Don't mix it into resin, clear varnish, or other paints.
Yes. Thin it with up to 40% water for airbrushing. Experiment with nozzle size to find what works for your setup.
No. It will crack on fabric and soak in. Fabric medium will damage the effect and it won't survive washing.
No. There is no varnish matte enough for Black 2.0. Even the flattest varnish you can find will damage the ultra-matte effect.
You can, but since we don't recommend covering it with varnish, it will scratch off easily.
Black 2.0 vs Black 4.0
Black 4.0 absorbs more light (over 99%). Black 2.0 is not as light-absorbing, but it has the flattest, most matte surface. If the absolute void effect matters most, choose Black 4.0. If an ultra-flat matte with no sheen at all is what you need, Black 2.0 is right for you.
Black 2.0 gives an ideal matte base that helps Black 4.0 adhere and maximises its void effect on smooth or shiny surfaces. Apply Black 2.0 first, let it dry, then apply Black 4.0 in thin coats.
Black 4.0 is the choice for the deepest voids on miniatures, Warhammer models, and props. Apply in thin coats with a good soft brush.
LIT glow pigment
LIT is the most powerful glow in the dark pigment available to artists. It charges under any light and glows for hours. It is a phosphorescent pigment, not a fluorescent one, which means it charges up and releases light slowly rather than just glowing while lit.
Yellow (the brightest), blue, green, orange, pink, and red. Yellow gives the strongest glow. Red is the hardest to make and is harder to achieve.
Mix 10g of LIT with 15g of SuperBase (a 1:1.5 ratio). Two 50g tubs of LIT with one bottle of SuperBase covers approximately 14 square feet. Add LIT to SuperBase gradually, not all at once, to avoid lumps. A little water or extra SuperBase will thin it, but will slightly reduce glow intensity.
Yes. A clear varnish over LIT is fine. For outdoor use, a polyurethane varnish gives the best protection.
Yes, but a protective coating is needed. Use a polyurethane or exterior grade varnish to make it weather and waterproof.
Yes. LIT is amazing in epoxy resin. Mix it into clear resin for glowing cast objects.
Yes. Mix LIT with Gum Arabic and a little honey. It works really well as a glow watercolour. You could also mix a small amount into regular watercolour, though the glow will be less intense.
Yes. Apply LIT mixed with SuperBase, then top coat with any waterproof exterior grade polyurethane or yacht varnish for maximum durability.
Clear wax works better than white wax. White wax affects the appearance. Try clear wax first and experiment, as a clear medium will let the glow come through properly.
Not ideal as a fabric dye since it is not waterproof and will wash out. Mix it with a screen printing medium if you want to use it on fabric.
Yes. Mixing different LIT colours won't affect the glow. Check the Instagram highlights called 'Mixing LIT' for visual examples.
Only the original LIT formula can be charged with heat. All other colours must be charged with light. UV light charges fastest.
SuperBase is archival when used with archival pigments. LIT is not archival due to its energy-absorbing nature. Over many years it will very slowly start to weaken the glow, but this takes a very long time.
Original LIT is 10-30 micron.
MIRROR chrome paint
MIRROR is a chrome finish paint that creates a genuine mirror you can see your reflection in. It is solvent-based and designed for artists to apply with a brush. One bottle covers approximately 8 square feet.
No. MIRROR is solvent-based. The solvent is alcohol-based. This means it can go over dried acrylics or oils, but it must be used with good ventilation.
Canvas, paper, wood, metal, plastic, miniatures, leather. Smooth surfaces give the best mirror reflection. Porous surfaces like MDF should be sealed with a PVA base coat first. Untreated wood and canvas should be fine without a base coat.
Yes. It will work on metal and plastic surfaces.
Yes. You can spray it straight from the bottle. Wear a mask and clean the airbrush immediately after use.
MIRROR does not need a varnish for durability. If you want to apply a clear coat for protection, always test on a small area first as some coatings can affect the mirror effect.
No.
It contains aluminium which is slightly conductive. We would not recommend using it on sensitive electronics or computer components.
About 6 months. Store it properly and use it within that time.
No. But you can paint MIRROR onto a cured resin object once it is fully set.
MIRROR is solvent-based and not non-toxic. Use it with good ventilation. We do not recommend it for skin, nails, or near sensitive electronics. Refer to the MSDS for full safety data.
Molotow is a good ink-based chrome, but less durable and it doesn't go as far. Rustoleum and rattle cans can't really produce a true chrome effect. Alcad requires a full kit with basecoat and topcoat. MIRROR is the only one designed specifically for artists to brush on, and it gives a genuine mirror finish from a single bottle.
SUPERBASE acrylic medium
SUPERBASE is the world's mattiest acrylic medium and the ideal binder for mixing pigment powders into paint. It holds more pigment than any other binder and is the foundation of the LIT glow system.
Add pigment slowly to SuperBase and mix thoroughly. Adding it all at once can create lumps. If lumps form, add a little water first and remix. The standard ratio for LIT is 10g LIT : 15g SuperBase.
Yes, but a protective clear varnish is needed for weather resistance.
Yes. Add water to improve flow and experiment with ratios until you get the right consistency for your nozzle.
Around 7.5-8 normally.
Yes, when used with archival pigments. LIT itself is not archival due to its energy-absorbing nature, so LIT + SuperBase mixtures will see the glow weaken very slowly over many years.
On smooth or shiny surfaces, soap and a washing-up sponge should do it while it is still relatively fresh. Once fully cured on a porous surface like canvas, it is very difficult to remove and may need paint remover and careful scraping.
WHITE 2.0, PINKIE, YOLO, OHMM
WHITE 2.0 is genuinely whiter than a white canvas or white paper. Applied over a primed surface, it creates a white that is measurably brighter than the substrate underneath.
PINKIE is the flattest, most aggressively fluorescent pink available to artists. Not a blush or a pastel. A genuine high-intensity fluorescent.
YOLO is a synthesis of OLO, a genuinely new colour created by stimulating specific retinal cone cells. It goes beyond any fluorescent available to artists and creates a visual experience that standard colour theory cannot fully describe.
OHMM is the whitest glow pigment. It glows white in the dark. Mix it with SuperBase for the best white glow system.
The fluorescent powders (pink, yellow, green, blue) are not lightfast; their colour fades over time in direct light. LIT is different - it is phosphorescent, not fluorescent, and should last indefinitely.
About the studio
culturehustle.com is the domain where you can get Stuart Semple's art materials. It is Stuart's art project. He finds, develops, and shares extraordinary materials directly with artists, on a not-for-profit basis, without gatekeepers.
Stuart Semple and his team make them. Stuart is a British contemporary artist based in Dorset, England. His signature is on every label. The studio is on the side of artists, not shareholders.
Yes. All water-based acrylics are vegan and non-toxic. Exceptions: Happy, Raygun, and Crush contain cadmium. MIRROR is solvent-based.
Most are. All water-based acrylics are non-toxic and vegan-friendly. Exceptions: Happy, Raygun, and Crush contain cadmium. MIRROR is solvent-based. Non-toxic does not mean skin safe - we don't recommend using any of the materials for face paint, bath products, or on skin.
The studio operates on a not-for-profit basis and everything goes back into making the best possible materials. Some paints like MIRROR require very specialist raw ingredients and take several weeks to produce even a small batch. A little goes a long way, and the quality is there.
Sorry, we don't. It takes a lot of work to make and package samples and we don't have the crew for it right now.
Good quality soft synthetic brushes. Some favourites: Liquitex Freestyle, Pro-Arte Sterling, Coltman, Cryla.
The physical shop is now closed. It was previously at 21 Commercial Road, Bournemouth, Dorset BH2 5RP, and briefly at South Molton Street and the main floor of Topshop on Oxford Street. Everything is now at culturehustle.com, shipping worldwide.
No. Stuart's art materials are not patented, with one exception: SPRAY is patented.
Shop Pay, Google Pay, PayPal, Bitcoin, and Apple Pay, as well as standard card payments.
Acrylic paints: 1-2 years as a safe guide, though many last longer.
Powders and pigments: at least 5 years, as long as they are kept out of direct sunlight and away from moisture.
Metallics: around a year on average (the pigment can settle), though they often last longer.
Diamond Dust and glitters: essentially indefinite in their containers.
Rainbow Liquid: shorter lifespan - keep at least 6-9 months depending on storage conditions.
It is not a good idea to mix them directly. Oil can shift over time and cause acrylic layers to crack. If the oil layer is completely dry, using acrylic over the top carries some risk. Test on a spare surface first if you are unsure.
Ordering, delivery and contact
Online at culturehustle.com. We ship worldwide. No physical shops are currently open.
No physical shop right now. Everything is at culturehustle.com and ships worldwide.
Email hello@culturehustlehelp.com with your order number and we will get back to you as soon as possible.
For wholesale, collabs, or large-scale projects, email hello@stuartsemple.com.
The studio runs not-for-profit, so there are no regular discount codes. Black Friday is the one sale of the year. For orders of 10 or more of the same material, email for a 10% one-use code.
Yes. A fast track option is available at checkout.
Yes, worldwide. From Dorset, UK and Kentucky, USA.
Tracking information is sent by email when your order ships. You can also track at culturehustle.com/apps/track123.
For orders of 10 or more of the same item, a 10% one-use code can be arranged. For wholesale Black 4.0 specifically, email hello@stuartsemple.com.
There is a collabs programme you can request through the site. Stuart sponsors art clubs - check the art club pages if you want to start one. For larger projects (film sets, buildings, artistic collaboration), email hello@stuartsemple.com.
Black 4.0 - more questions
Don't mix them. Side by side should be fine, but mixing Black 4.0 with enamel is not recommended as Black 4.0 contains acrylic resin.
Gouaches don't contain resin, so they can bulk out pigment further. They look dark but are more difficult to use and rewettable, meaning they are not as water resistant. Black 4.0 has a structural depth that gouache does not.
Black 4.0 needs a specific bottle type due to its experimental formula. We had already printed a large run of those bottles with Black 3.0 artwork. Rather than scrap perfectly good packaging, we applied Black 4.0 labels over them. Everything inside is Black 4.0.
Raven - gloss black
Raven is a gloss black acrylic. It can actually look darker than Black 4.0 to the eye in some lighting conditions because of the way gloss surfaces catch and deepen contrast. Unlike Black 4.0, it can be sealed with varnish and used outdoors, on leather, and on fabric.
Yes, with a clear protective varnish over it.
Leather: yes. Fabric: it will stick but is fragile, and a specialist fabric topcoat is needed.
Yes.
Yes. Thin it with up to 20-25% water or FLOW for airbrushing. Experiment with nozzle size.
Yes. Unlike Black 4.0 and Black 2.0, Raven accepts a clear varnish. This makes it suitable for more durable applications.
BLINK ultra-matte black ink
BLINK is an ultra-matte black ink. It gives an extremely flat, light-absorbing surface suitable for use in fine-line work, calligraphy, and detailed studio applications.
It works best on paper, card, and smooth surfaces. The matte finish is very sensitive to any coating applied over it.
Yes. Thin carefully and test your ratio before working on a finished piece.
Black Mirror - chrome black
Black Mirror is a solvent-based paint that dries to a deep, glossy reflective black mirror finish. It is based on automotive paint technology and creates a lacquer-depth gloss black that reflects like a black mirror.
Because it is solvent-based, check compatibility with any topcoat on a small test area first.
Very different. Black 4.0 is ultra-matte and void-like. Black Mirror is high-gloss and reflective. They create opposite effects. Some artists use both in the same piece for contrast.
LIT - mixing and advanced use
10g LIT to 15g SuperBase (1:1.5). Two 50g tubs of LIT with one bottle of SuperBase covers approximately 14 square feet. Add LIT to SuperBase gradually, not all at once.
Yes. Use approximately 100g LIT per 200-250ml of clear varnish. The ratio is less than SuperBase because varnish doesn't contain mattifiers.
Yes, and it will glow.
No. The fumes from burning the pigment are not safe.
LIT mixes fine into alcohol but won't dissolve. The pigment sits on top of the substrate. Sealing it once dry makes it fully handleable.
Yes. LIT is excellent in epoxy resin for glowing cast objects.
Original LIT is 10-30 micron.
We haven't tested long-term UV exposure in all colours. A UV protective varnish should help, but we can't guarantee multi-year performance in permanent outdoor installations.
Diamond Dust and Dazzle eco glitter
Diamond Dust is made of actual glass. It creates a genuine diamond-like sparkle when light hits it. Because it is glass, it must be handled carefully.
No. Diamond Dust is made of glass and is dangerous for use on skin, nails, bath products, or anything near the eyes. It is an art material, not a cosmetic.
No. It is designed to be sprinkled on top of a surface. You can sprinkle it over a cured epoxy piece but don't mix it into the resin.
No. It is designed to sit on top of the surface. You can sprinkle it over a wet clear varnish so it sticks in place.
No. It is made of glass and will not tarnish.
Dazzle is an eco glitter with a plant-based core made from eucalyptus. It is greater than 95% plant-based and fully compostable in warm damp conditions.
Most eco glitters are coated in aluminium and plastic, requiring industrial composting. Dazzle has a plant-based eucalyptus core and the aluminium and resin coating is fully compostable. In warm, damp conditions it can break down in months.
400 microns (0.4mm).
Dazzle is not cosmetic grade, so we would not recommend it for anything that might get near eyes or skin. It would make soap sparkly but we can't recommend it as a cosmetic ingredient.
Yes.
SNOW and COAT
SNOW is a large particle mica-based shimmer material. It is an unusual exception in the range - Stuart generally doesn't use micas in his materials, but SNOW is specifically mica-based.
750 microns (0.75mm). It is a large-particle material.
Probably not well. The particle size is too large for most nozzles. You would need a very large nozzle to attempt it.
Yes. It works well in resin for a shimmer effect.
Yes. SNOW is specifically mica-based, which is an exception. Stuart does not use micas in the other materials in the range.
COAT is a water-based protective varnish for use over most paints. It is water resistant but not fully watertight. One bottle covers approximately 2 x 2 metres.
Most acrylics, powders, and potions. It cannot be used over Black 2.0, Black 4.0, MIRROR, Rainbow Liquid, or Diamond Dust without affecting those finishes.
Yes.
Yes. Thin it with up to 25-30% water.
Water resistant, not fully watertight.
Yes, as long as the oil paint underneath is completely dry.
Rainbow Liquid
Rainbow Liquid is a liquid crystal varnish that creates a shifting iridescent rainbow effect when it catches light. It changes colour as you move around the piece. It works best over a dark background, which maximises the rainbow shift.
Store it in the fridge and shake it every few days. Heat will kill it. Stored correctly in the fridge it will last around 3 years. If stored at room temperature, lifespan is significantly shorter.
Technically yes, but it will add gloss and destroy the ultra-matte effect. If you want to use Rainbow Liquid over a black surface, Raven gloss black is the ideal base as it can be sealed and provides a good dark ground.
Yes. Rainbow Liquid is a varnish and is waterproof once dry.
Yes.
The darker the background the better. Raven or another very dark surface maximises the iridescent shift.
Mirror - more questions
The bottle is oversized to make it more robust and easier to fill. Each bottle contains exactly 15ml of MIRROR paint. It is a very specialised material with high-grade pigments. Applied carefully, that 15ml covers up to 8 square feet with one coat.
Yes. It works brilliantly on miniatures and plastic. Here is a video example: watch on YouTube.
We wouldn't recommend it. Once dry it is durable, but we don't think it is designed to withstand full submersion long-term.
Yes, if it is completely dry first. It would not give you a full mirror effect since other paints would cover it, but technically it works as a base layer.
It works fine on the surface but MIRROR does get dulled with heavy handling over time. On a guitar that gets a lot of touch and use, it will gradually dull. The aluminium content means it should not affect sound, but we would not recommend it for computer or electronic components.
No. It is not heat resistant and is not designed for hot surfaces. Heating it could send out fumes.
No. Stuart did make the Goldest Gold acrylic, which is the closest thing to gold leaf in a bottle. Check culturehustle.com for that.
Colouriest Colours and Neon Potions
These are the highest concentration fluorescent pigments available. They are not lightfast, meaning their vivid colour will gradually fade over time in direct light. Use them in work where the impact is immediate rather than for archival pieces.
The Neon Potions are the colouriest colours in a ready-to-use paint form, mixed into SuperBase. They give you the vivid fluorescent colours at maximum intensity straight from the bottle.
Fluorescent colours (the Colouriest Colours range) glow vivid in UV light and bright conditions but don't store light. Phosphorescent materials (like LIT) charge up under light and release that energy slowly as a glow in the dark. LIT lasts and recharges indefinitely. The fluorescent powders are not lightfast and fade over time.
The pigments in the powder range have a good lightfastness rating around 7-8 out of 8. But the full formulas have not been independently tested, so we can't give a precise number.
Heavy Metal, Unicorn Milk and other potions
Heavy Metal is a heavy shimmer, metallic potion. It has a very high loading of metallic pigment for a dense, reflective shimmer effect.
Unicorn Milk is a shimmery, iridescent potion. It is a shimmer medium rather than a fully reflective one, and gives a soft multicolour shift. Stuart confirmed it is indeed lactose free.
Yes. It works fine over Phaze and will only slightly delay the heat-reactive colour change, which is barely noticeable.
Yes - take your time with it. Stuart has a video showing how: watch here.
Cosplay, costume crafting and props
For polyester or spandex you need a flexible paint that moves with the fabric. Mix a good acrylic (Black 4.0, Raven) with SuperBase as your flexible binder. The key trick: stretch the fabric tight before and while you apply the paint, and let each coat dry completely before the next. If you paint it flat and unstretched, the paint will crack the moment it flexes. Thin coats, stretched fabric, and SuperBase as binder are the three things that make it work.
Acrylic paints work well on leather and vinyl because they stay flexible once dry. Use Black 4.0 or Raven mixed with SuperBase as a binder for durability and flex. Apply thin coats and let each one dry. Leather moves a lot, so the more flexible your paint setup, the better. A specialist topcoat designed for flexible surfaces adds extra durability.
EVA foam needs to be sealed and primed before painting, otherwise it soaks up paint and the finish is uneven. Coat the foam with a 50/50 mix of PVA glue and water, or a neutral primer, and let it dry fully. Then paint with acrylics. Black 4.0 makes an excellent deep base coat for props. Raven works well for a high-gloss black finish. Seal with a clear coat once finished.
MIRROR is exactly what you need. It is a brushable chrome paint that creates a genuine reflective mirror finish. Apply it over a smooth sealed surface and you will see your reflection in it. For a deep reflective black, Black Mirror gives a lacquer-depth gloss black. Both work well on props, visors, and costume pieces.
Miniatures and model painting
Yes, and they are very popular with miniature painters. Black 4.0 is excellent for the deepest void shadows and eye sockets on miniatures. Raven works well for high-gloss black details. The powder pigments (LIT, Pinkest Pink, Loveliest Blue) can be mixed into clear mediums for vivid spot colours and highlights.
Prime your miniature with a dark base (Black 4.0 works brilliantly). Mix LIT into a clear medium and apply it in thin layers over the areas you want to glow. When painting for UV effects, check your work under a UV or blacklight as you go. Colours shift significantly between normal and UV light, so what looks right in daylight will look very different in the dark. Blue LIT and Pink LIT both give vivid results on miniatures.
Right here. The powder range includes Pinkest Pink, Loveliest Blue, and all the LIT glow colours. Mix them into SuperBase as a binder for a ready-to-use paint, or into resin, clear varnish, or any transparent medium. SuperBase is designed specifically to hold more pigment than any other binder.
DIY and mixed-media painting
Yes. Acrylic paints (Black 4.0, Raven) are naturally elastic and work well on resin and semi-flexible plastics without cracking. For fully flexible 3D-printed parts, mix with SuperBase as a binder. Seal the finished piece with a clear topcoat.
Seal it first. A 50/50 mix of PVA glue and water works well for foam, plaster, and wood. Gesso is the traditional choice for canvas and board. Once the seal coat is dry, paint as normal. Skipping this step on porous surfaces means uneven absorption and patchy coverage.
Yes. That is exactly what SuperBase and the pigment powders are designed for. Mix Pinkest Pink, Loveliest Blue, the LIT glow pigments, or any powder into SuperBase and you have a custom acrylic paint with extraordinary pigment loading. SuperBase holds more pigment than any standard acrylic medium.