It is a bit of a general idea. Older pigments were made with natural resources and plants. Via charcoal for black and what not. To bind pigments they would use egg yolk or casein. This could be used for making paint of a kind for paintings, painting inspirationals, or wallpaper. In guessing a dozen uses could be thought up. I just thought this would be a great way to make a way to make dyes and other things.
Maybe some fingerpaint inspirationals and whatever else.