noun
A color
deep yellow, ochroid, tawny; see color 1, gold, modif., sense 2.
A precious metal
aurum (AU), green gold, white gold, red gold, gold foil, gold leaf, gold plate, filled gold, commercial gold, gold alloy, cloth of gold, gold cloth, gold thread, gold wire, gold lace, gold tooling, rolled gold, mosaic gold, Mannheim gold, German gold, dead gold, Etruscan gold, Roman gold, colored gold; see also metal.
as good as gold*