Bronze Powder in copper and zinc! Confused?

There are many gilding techniques and colours. We used Bronze powders on this frame. ‘Bronze powders’ are not made of Bronze but varying mixes of Copper and Zinc. On this frame we used a warm Gold. The Bronze powder is applied using a wax medium. The gentle scoop between the gilding is painted Farrow and Ball’s London Stone, to pick up some of the warm neutral colours in the oil painting.