There are 3 basic colors: Black, Chestnut, and Bay. Of course there are different variations of chestnut like liver chestnut, sorrel and variations of bay like sandy bay, bright bay, and blood bay. Dun, cream, grulla, palomino, dapple, buckskin, cremello, and perlino are dilute colors. Patters can be overo, tobiano, tovero, sabino, rabicano, and many appy patterns (blanket, leopard, etc).