Almost all forms of Greek and Roman art were coloured in the original. Most Greek sculptures were painted in strong and bright colours. The clothing and hair were painted, with the skin left in the natural colour of the stone. Some sculptures were entirely painted. The polychromy of stone statues was paralleled by the use of different materials to distinguish skin, clothing and other details, and by the use of different metals for lips, fingernails, etc. on high-quality bronzes like the Riace bronzes.