WALTER FOSTER CREATIVE BOOKS-Color Mixing Recipes: For Oil & Acrylic. This book has mixing recipes for more than 450 color combinations. The plastic Color Mixing Grid (included) ensures accurate paint measurements. Also includes instructions in color theory, color value mixing, complementary colors, graying color naturally, and mixing flesh and portrait colors. Author: William F. Powell. Hardcover, spiralbound, 47 pages. Published 2012. Imported.