Coloring chocolate candies requires special food coloring. The coloring typically found in the baking section of grocery stores is water-based. If added to chocolate candy, this coloring will cause your chocolate to "seize" and the candy will no longer be easy work with or mold. Candy colors are oil-based and are suitable for all types of candy. It can be mixed in with your candy while liquid, or painted on the molds prior to pouring in the candy. Powder coloring, often called "airbrushing colors" are also generally appropriate for candy coloring.

