Greenish Yellow is rated +++ on Royal Talens' scale. Three pluses means the colour is rated to last at least 100 years under museum conditions, two pluses at least 25 years. Museum conditions means indoors and out of direct sunlight. That rating is why work painted in Amsterdam Standard Series is safe to sell, provided the buyer is not hanging it in a north-facing window.

The Amsterdam Standard Series runs in 20ml, 120ml, 250ml, 500ml and 1 litre, though not every colour is made in every size. We carry the sizes that move, and the 500ml jar is the one to choose when you are painting large, teaching, mixing in volume or working on murals and props. If you want a size you cannot see on the site, ask us and we will check what Royal Talens produces in that colour.

Greenish Yellow (colour number 243) uses PY74/PG7. It is rated semi-opaque with a lightfastness of +++. Knowing the pigment code matters more than the colour name, because names vary between brands while pigment index codes do not. If you are matching a colour across brands or checking permanence, the code is the thing to compare.

Yes. The question that matters for selling work is permanence, and Amsterdam Standard Series is rated ++ or +++ for lightfastness with a 100% acrylic resin binder that cures water resistant. Where professionals tend to reach for a higher grade is when they need maximum pigment strength in a small area, or very specific single-pigment mixing behaviour. For large canvases, underpainting, murals and blocking in, Standard Series is a sensible professional choice.

Tell us within 7 business days of receiving it. Email customerservice@artshedonline.com.au with your order number and photos of the damage and the packaging, and our team will sort it out. Paint jars are packed to survive the trip, but couriers are couriers. Reporting it quickly with photos is what lets us make a claim and get a replacement moving.

Use a stay-wet palette, which is a shallow tray with a damp sponge under a sheet of palette paper, and close the lid between sessions. Failing that, mist the palette with a fine water spray every few minutes and work in smaller mixes. Do not scrape half-dry paint back into the jar, because those lumps will never redisperse and you will find them in a later layer. Acrylic retarder medium buys extra open time if you need it.

Very. The 500ml and 1 litre sizes and the medium viscosity are both suited to covering area fast. It takes to MDF, plywood, cardboard, foam that has been sealed first, plaster and most primed surfaces, dries fast enough to recoat the same day, and the metallic and reflex fluorescent colours in the range cover effects that would otherwise need spray.

Amsterdam Standard Series is water based, odourless and cleans up with soap and water, which is why it is widely used in Australian schools and community workshops. It is still an artists' material rather than a toy paint, so normal classroom practice applies: check the label and safety data sheet for the specific colour, supervise young children, keep it away from mouths, and ventilate as you would for any art activity. We can supply safety data sheets for any product on request.

It cures water resistant and permanent, which is enough for an indoor painting and enough to survive being wiped. It is not the same as a waterproof coating, so for anything living outdoors, getting scrubbed, or holding water, seal it with an exterior or hard-wearing clear varnish. Note also that it needs to be fully cured, not just touch dry, before it reaches that water resistance, which means days rather than minutes.