The cross between a Bay stallion, whose coat brown body with black mane, tail, lower legs and ear tips, due to the presence of black pigment restricted to the points by the Agouti gene., and a Gray Dark Brown mare with coat the (G) gene acts on the base coat promoting progressive lightening throughout the horse's life until reaching very pale or completely white tones. Dark brown coat, often nearly black, with black points, expressed over the bay base., can produce 8 different coat colors: Gray Bay (33%), Bay (33%), Gray Chestnut (7%), Chestnut (7%), Gray Dark Brown (6%), Dark Brown (6%), Gray Black (4%) and Black (4%). Results vary according to the genotype of each parent — use the filters above to explore specific combinations.