Yes. Alumilite offers a full line of dyes specially formulated for Alumilites Casting Plastics. If you use an outside source make sure that the dyes/pigments are not water-based. Some oil-based dyes are compatible. Test a small amount before mixing in larger quantities. Most powdered dyes will work if they do not contain any moisture (known as a dry filler). We also have a line of metallic powders that you may use in your molds to color Alumilite.