Starting January 1st, 2015 we began selling a new WEST SYSTEM Epoxy pigment. In addition to our 501 White Pigment and 503 Gray Pigment, we’re now offering 502 Black Pigment. Just like the 501 and the 503, it alters the color of the epoxy mixture without affecting the cured physical properties. Similarly, the maximum acceptable loading is 3%. This is great for covering a surface with a single coat of black epoxy. Adding more pigment will increase the opacity, but can skew the mix ratio because there is epoxy resin in the pigment.