The cross between a Grullo stallion, whose 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., and a Roan Smoky Black mare with coat the (Rn) gene acts on the base coat by distributing white hairs throughout the body, giving it a roan appearance. The head and legs retain the original base color tones. Slightly faded black coat caused by a single copy of the cream gene over the black base., can produce 16 different coat colors: Roan Dun Smoky Black (11%), Dun Smoky Black (11%), Roan Smoky Black (11%), Smoky Black (11%), Roan Dun Black (11%), Grullo (11%), Roan Black (11%), Black (11%), Roan Dun Palomino (2%), Dun Palomino (2%), Roan Palomino (2%), Palomino (2%), Roan Dun Chestnut (2%), Dun Chestnut (2%), Roan Chestnut (2%) and Chestnut (2%). Results vary according to the genotype of each parent — use the filters above to explore specific combinations.