Quaker-colored acier ashen ashy canescent cinereous cinerous dapple dapple-gray dappled dappled-gray dingy dismal dove-colored dove-gray dreary dull 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-gray mousy pearl pearl-gray pearly sad silver silver-gray silvered silvery slate-colored slaty smoke-gray smoky sober somber steel-gray steely stone-colored taupe