Gunmetal can also mean steel treated to simulate gunmetal bronze. Brass, bronze, gunmetal, cast iron, steel, alloy steels and stainless steels are very common. Specimens vary considerably in colour, including olive, yellowish-brown, khaki and gunmetal but are rarely black. The only color option is "Gunmetal Grey". "Gunmetal" may actually refer to a shade of gray that has a bluish purple tinge. The dome is in lead, with a lantern in gunmetal and gilded copper. The medal is made of bronze gunmetal from captured cannon. The original prototypes were made of solid copper, but when issued were of blackened gunmetal. The sample was gunmetal black, and very muscular. The wheels remain unchanged from the normal model but came with gunmetal paint finish. Her track "Gunmetal Black" was made in six hours. Gunmetal alloys contain roughly 88% copper, 8-10% tin, and 2-4% zinc. Another such material is gunmetal, from the family of red brasses. After the Gunmetal Hound incident, his status remains unknown.