This red pigment is a paste for tinting polyester resin, vinyl ester resin, epoxy resin, gel coat and polyurethane foam. Pigments are added to the resin prior to the addition of catalyst. Our primary colors may be mixed to provide nearly any shade or hue. Keep an assortment of pigments on hand for color matching repairs or blending your own custom colors. When used to pigment our gel coats and resins, they are normally added at 6-8% by weight or ½ pint of pigment per gallon of resin. We have made every effort to accurately represent the cured color of our resins with these pigments. Due to various browsers these colors could vary.