Purple shampoos are not just for grey horses or white markings. One of our favorites is the Silverado Silver shampoo. This shampoo will help enhance the colors of palominos, pale buckskins, roans with a lot of white hair, and of course grays. Use it on white manes and tails to get out yellow discoloration. It's also wonderful for socks and stockings, as well as horses like paints and appaloosas with more extensive white.