How to color plaster of Paris?
I really depends on the depth of color you want. I’ve mixed acrylic paint in with the powder, but remember it is a liquid so you have to adjust the amount of water you add. Once you add water to activate the powder, you are diluting your color. I find the result is more like a tint. When you paint dried plaster of paris with acylic paints it usually takes two coats. I use it full strength, straight out of the bottle. Then I use a non-yellowing polyurethane sealer for ease of cleaning. Dust that sits on the surface tends to give a dirty appearance and sealing it prevents that.
