Color genetics with horses is not without complexity. A new buckskin in the herd this year inspired me to revisit what I know about color genetics. Without getting into the science of it all and in the simplest terms, black and red are the two basic equine color pigments. A horse’s ability to reproduce theses pigments is an inherited trait, with red being recessive to black. Each pigment can be modified by other genes, including dilution genes. Buckskin color is black-based and a dilute version of the color bay, another black-based coat color. White markings are, simply stated, a matter of chance.