Undercoat Pigment provides a base coat of color over White plaster cloth (1203) This is the perfect base color under low ground covers, such as fine and blended Turf. Use full-strength or diluted. Use Earth Colors Liquid Pigment to color rocks, terrain and plaster castings. Dilute and blend water-soluble pigments in limitless combinations. Color plaster castings using our "leopard spot" technique. Purchase the Scenery Manual (1207) for additional information on how to use the Terrain and Landscape Systems.