WordNet sense 1 (a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia):

Au

WordNet sense 2 (a deep yellow color):

amber

WordNet sense 3 (made from or covered with gold):

golden, gilded

WordNet sense 4 (containing or made of or resembling or characteristic of a metal):

metal, metallic

WordNet sense 5 (having the deep slightly brownish color of gold):

aureate, gilt

WordNet sense 6 (being or having or characterized by hue):

chromatic