Colorants Dyes can be mixed to achieve the desired strength and shade. Color matching services are a specialty of FSW color labs, and they are fully prepared to suit your individual requirements from the lab to production and use. They are available in liquid and powder form, as well as custom packaging. It can be converted to liquids that are stable. These dyes come in water-soluble, solvent soluble, and palpable packaging for convenience and to keep facilities clean.