Download Safety Data Sheet The basics Woodland Scenics Earth Colors Liquid Pigments are specially formulated for adding color to plaster, plaster cloth, foam, papier-mâché, wood, and flex paste. The benefits Liquid Pigments are non-toxic, water-soluble, removable and allow the creation of custom colors. The uses Use Earth Colors Liquid Pigment to color rocks, terrain, and plaster castings by diluting and blending the water-soluble pigments in limitless combinations. The bottom line More realistic than paint!