Check the listing for details. System Three CASTFX CRESCENT Liquid Colorant – Black – 4 Ounces. Condition: New. Listed at 19.99 USD. System Three CASTFX CRESCENT Liquid Colorant – Black – 4 Ounces, 173663, Designed to work specifically with System Three RiverCast, MirrorCast, and MirrorCoat, Black – 4 Ounces, CastFX Liquid Colorants are compatible with most epoxy systems, but pretest to ensure results meet your expectations. Do not add more than 4 ounces per mixed gallon, Cleanup: Clean up with lacquer thinner, denatured alcohol or white vinegar, CastFX Liquid Colorant Crescent Black is designed to work specifically with System Three RiverCast, MirrorCast, and MirrorCoat. Add a little colorant for a transparent effect or add up to 4 ounces per gallon for complete opacity. Intermix with other colors – Union Blue, Tapps Red, Crater Yellow, Chellan Green and Mason Brown – as well as use with CastFX Dry Pigments to create.