The cross between a Gray Smoky Black 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. Slightly faded black coat caused by a single copy of the cream gene over the black base., and a Grullo mare with coat the Dun gene acts on the base color, adding the characteristic dark dorsal stripe. In some cases it lightens the body tone and may also produce zebra-like leg markings. Entirely black coat, with no dilutions and no Agouti gene action restricting black pigment to the points., can produce 16 different coat colors: Gray Dun Smoky Black (11%), Dun Smoky Black (11%), Gray Smoky Black (11%), Smoky Black (11%), Gray Dun Black (11%), Grullo (11%), Gray Black (11%), Black (11%), Gray Dun Palomino (2%), Dun Palomino (2%), Gray Palomino (2%), Palomino (2%), Gray Dun Chestnut (2%), Dun Chestnut (2%), Gray Chestnut (2%) and Chestnut (2%). Results vary according to the genotype of each parent — use the filters above to explore specific combinations.