Quaker-colored acier ashen ashy bay bayard buckskin calico pony canescent chestnut cinereous cinerous dapple dappled dappled-gray dingy dismal dove-colored dove-gray dreary dull dun dusty glaucescent glaucous gray gray-black gray-brown gray-colored gray-drab gray-green gray-spotted gray-toned gray-white grayed grayish griseous grizzle grizzled grizzly iron-gray lead-gray leaden livid mouse-colored mouse-gray mousy paint painted pony pearl pearl-gray pearly piebald pinto roan sad silver silver-gray silvered silvery skewbald slate-colored slaty smoke-gray smoky sober somber sorrel steel-gray steely stone-colored taupe