The color is determined by the composition of the alloy.
• rich gold is 82% copper and 17% zinc and 1% aluminium
• rich pale gold is 87% copper and 12% zinc and 1% aluminium
• pale gold is 91% copper and 8% zinc and 1% aluminium pigments can
Also be added to the composition to a particular color effect. Further, there is the more bronze powders under the name copper ducats gold and copper bronze