I have some of the gold finish also, and these have more copper color in them. Tint is a little off in the picture, but they are a decent match for my copper blocks.
I'm not an expert, but it appears to be an anodized finish to me. I don't think its plated in actual copper. My build has copper accents through out. I actually had most of my screws plated in actual copper by a 3rd party. I asked Bitspower if they would be willing to make me some copper fittings, and they said yes. The pictures are just showing what I received. Bitspower didn't share any details with me of their process.
Here's another shot of how I'm thinking about using them....