Got milk (paint)? Add color and creativity to any project without using toxic and petroleum-derived products (no cow required). Learn how to prepare, mix your own colors and apply milk paint. Milk paint is one of the most ancient forms of paint known. Milk protein (also known as casein) and crushed limestone are mixed to form a very strong binder. Clay is added for body and earth pigments are added for color. The paints are made in powder form to avoid adding chemical preservatives. The instructor will provide a sample board and paints to work with, or bring a project you’d like to experiment on.