Offering professional performance and outstanding lightfastness, Daniel Smith Extra Fine Gouache Tubes are artist-grade, waterbased gouache colors that produce an opaque matte finish. - Daniel Smith Extra Fine Gouache - Primary Mixing Colors, Set of 4Daniel Smith Extra Fine Gouache, PRIMARY MIXING SET - Includes four 15 ml (0.5 oz) tubes of Pyrrole Red, Hansa Yellow Medium, Ultramarine Blue, and Titanium White.