The form was then gilded, silvered, or hand-painted. The constellations are gilded and the 840 stars are silvered. The spurs of medieval knights were gilt and those of squires were silvered. They also sometimes consisted of leaves of copper, gilt or were silvered over. The head-piece, made of silvered bronze, depicts a youthful face. Many fish are covered with highly reflective scales, giving the appearance of silvered mirror glass. Some films are also silvered or tinted to reduce visible light. Black structural glass was sometimes silvered, to give it a reflective finish. Light is diverted to these sensors through a partially silvered mirror. One half of the horizon glass is silvered and the other half is clear. An optical head-mounted display uses an optical mixer which is made of partly silvered mirrors. Moradin's clerics wear earthy colors, with chain mail and silvered helms. Silvered saran-based tinsel was introduced later. The Brunswickers wore silvered skull badges on their hats. Despite an already enormous personal debt, he used 320 gladiator pairs in silvered armour.