The cross between a Gray Bay stallion, whose 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. 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 Chestnut 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. Base coat with a reddish body, mane and tail, with no black pigment., can produce 8 different coat colors: Gray Bay (37%), Gray Chestnut (28%), Bay (12%), Chestnut (9%), Gray Black (6%), Gray Dark Brown (4%), Black (2%) and Dark Brown (1%). Results vary according to the genotype of each parent — use the filters above to explore specific combinations.