 In contrast, diluted coat colors have melanocytes, but vary due to the concentration or chemical structure of the pigments made by these pigment-producing cells, not the absence of the cells themselves.There are at least five known types of pigment dilution in horses, three which, as described below, can act to produce off-white phenotypes.Horses with strongly diluted coat colors usually have pale blue eyes, cream-colored coats, and rosy-pink skin.