Silver

Silver is the metallic shade resembling gray, closest to that of polished silver. The visual sensation usually associated with the metal silver is its metallic shine. This cannot be reproduced by a simple solid color, because the shiny effect is due to the material's brightness varying with the surface angle to the light source. In addition, there is no mechanism for showing metallic or fluorescent colors on a computer. Consequently in art one would normally use a metallic paint that glitters... full article at wikipedia