Holbein s Artists Gouache is made with the finest, most saturated and lightfast pigments to create brilliant, opaque colors--with no opaquing agents! Made for the professional artist, the colors will not muddy when mixed and will not bleed or crack. Apply in thick, opaque layers to build up your surface, or add water for semi-transparency. Holbein s Artists Gouache Primary Colors Mixing Set was created especially for the purpose of color mixing. Make secondary colors easily without muddying or graying. This set includes 5 (15ml) tubes of: Primary White, Primary Black, Primary Magenta, Primary Cyan, and Primary Yellow.