I'm just speaking from my own point of view. The copper and gold are different enough as far as I can tell (although the bronze and gold are a bit close, that makes sense, though). I ask these questions not to disparage you, but because if it's something simple, that may resolve your complaint. Have you checked the color settings on your monitor/television/graphics card (as appropriate)? One further question, have you had your color vision tested ever? (You don't have to answer that, just something to think about).