What could be more glamorous and exquisite than bright, metallic gold? The juxtaposition of extravagant gold elements with matt black details is incredibly striking, and it was typical of the Great Gatsby era. A themed party will always seem more realistic with the combination of black and metallic gold (or even silver), so include it in everything. It's both easy and effective to use these colours in the decorations, the outfits and even the food!