Gouache

These fine art gouache brands, M Graham (Portland, OR) and Royal Talens (Netherlands) are both formulated with mold-deterrent  honey and gum arabic binders and will not crack and crumble in the palette.  The colors are high pigmentation and will dry to a uniform matte, velvety appearance.  I use this paint along with my watercolors while traveling and painting on location.  Gouache can be used for both commercial and fine art purposes.
M Graham 15 ml
Royal Talens 20 ml