You can store unused paint in a small airtight container, but I'm not sure how long homemade chalk paint keeps. (homestoriesatoz.com)
Having just finished a painting exercise in acrylics, I was about to throw the excess unused paint away. (arttutor.com)
«She had changed her palette, bought a completely new set of colors, and wanted to sell some perfectly good tubes of unused paint,» Davis says. (torpedofactoryartists.com)