West System pigments are epoxy-based liquid colorants used to tint the epoxy mixture to provide an even color  base for the final finish system. The colored surfaces also tend to highlight flaws and imperfections. Cured, pigmented epoxy surfaces are not a final finish, but require an additional paint or UV filter coating for ultraviolet protection. Add to the mixed resin/hardener at a rate of one teaspoon of pigment to 8 fl oz of epoxy. More pigment will increase opaqueness and mixture viscosity. One 4 fl oz bottle will tint approximately 1.5 gallons of epoxy.