That is a matter of opinion not factuality.

Impossible to answer with any degree of factuality.

None. Because matter of factuality, silver is not a color and so is gold. They're metals.

None. Because matter of factuality, silver is not a color and so is gold. They're metals. You will just create an alloy. But if you will insist that they are colors, then you'll get two; silvery-gold or golden silver. - jovencius.

In World War I, during the battle of Belleau Wood in France, the Marines were named 'Teufel Hunden' by their German aggressors. There remains some dispute to the factuality of the story, but this remains the general folklore passed on in the Corps.