Holbein Acrylic Gouache is a fast-drying, opaque acrylic based watercolor paint. It's water soluble while wet, and water-resistant, matte and opaque, even over dark surfaces. Great for grounds and layering. - Holbein Acrylic Gouache - Set of 12, Lesson Colors, 20 ml TubesHolbein Acryla Gouache, LESSON 20ML 12/SET - Includes 12, 20 ml tubes of Carmine, Scarlet, Deep Yellow, Lemon Yellow, Light Green, Viridian, Ultramarine Blue, Sky Blue, Violet, Burnt Sienna, Jet Black, and Titanium White.