Their skin color can be from a dark gray to a human tan. Breeches are traditional in color, usually white, tan, or beige. They also both come in various different colors such as brown, black, tan, or white. It forms white, tan, gray, or pink crystals. Another substrate material is cotton paper impregnated with phenolic resin, often tan or brown. Descriptions of its coloration range from black to tan or dark grey. It was maroon with a tan interior. Impurities may result in a brownish or tan color. Smokeless powders ranged in color from brownish tan to yellow to white. It was issued in tan or khaki canvas. Spike's coat has altered throughout the years between grey and creamy tan. Adult females are green with white, orange, yellow, or tan mottling. All subspecies have a lighter-colored underbelly&colon; white, light tan, or yellow in color. Interiors of Bedford cloth (either tan or gray) were offered. Acceptable colors for bloodhounds are black, liver, tan, and red.