I just went to a local shop and asked for a gold ish visor. He brought one out which I immediately recognized as an HJC CL14 visor (I have two of those helmets for my bike)
I charged me like $15 no tax.
As for Gold or Mirror Gold....it just depends on the company who makes and the company who sells it. IMO Gold = Mirror Gold. Depends on how they list the color.
Best part was, the sales guy says, "wanna make sure it fits first?"
I said, "Nope, Doesn't matter as it will be partially destroyed in approximate 20 minutes......."
It's amazing the stares you get.......