Artistic Acrylic is for large-scale artwork such as murals and signs, for architectural projects both inside and out. Except for the metallic and fluorescent colors, Artistic Acrylic can be used on exterior surfaces. Artistic Acrylic colors are formulated with opaque pigments that have extra hiding power. Completely intermixable, the colors dry to a beautiful matte finish and can be thinned with water or extender, or thickened with gel, gesso, or modeling paste. Use Artistic Acrylics as a pure acrylic finish or use them to simulate oil finishes, watercolors, and tempera. All products in the Artistic Acrylic line clean up with water. They're ideal for interior and exterior use. They're non-toxic, lead-free, non-mercurial, and non-flammable. A free printed color chart is available on request. Neither the printed nor the on-line color chart reproduce the reflective qualities of metallic and fluorescent colors effectively. Note — Metallic and Fluorescent colors are for interior use only.