YASUTOMO-Pearlescent Watercolor Set-21 colors. The finest quality watercolors used by Japan's watercolor and Sumi-e painters. Twenty- one colorfast colors in a reusable plastic container. They will add dimension and sparkle to all your paper crafts. Can be used alone or with other watercolors. Great for painting, stamping, greeting cards and much more. Non-toxic: Conforms to ASTM D4236.