* Brown: This is a rare but naturally occurring coat color for Nokota horses.
* Grullo: This is a variation of the dun gene, which causes the horse to be a shade of mouse-gray with brownish legs and dorsal stripe.
* Dun: This is a yellowish coat color with some primitive markings, such as a dorsal stripe.
* Bay: This is a reddish-brown coat color. Nokota bay horses are often referred to as "claybanks."
* Red dun/sorrel: This coat color is a variation of the dun gene that causes the horse to be a shade of reddish-tan.
* Roan: This coat color is actually a mixture of colored hairs and white hairs, giving the overall appearance of a gray or reddish color with hints of the base coat color.
* Smokey black: This is a darker shade of the dun gene that causes the horse to be a dark brown or black with lighter, smoky tips to the hair along the mane and tail as well as the legs and belly.