First, sorry to upset you, certainly that wasn't our intent. The Backer bundle did say it would have a copper badge. But we didn't end up calling the bundle copper (all the bundles above it were named for a mineral or metal). There are more than a couple of text issues with rewards, which are locked the moment you go live with a Kickstarter (i.e. they cannot be edited)
We can resolve this in a couple of ways that I can think of.
1) We can change the backer badge to a more copper-like color. I'm pretty sure the artists ended up changing it when we made the badges because it was too close to gold and amber though in the first place. Maybe make more greenish like copper that's oxidizing.
2) We can change the text to call it the Backer/Copper badge.
Things often change during development for reasons that aren't apparent until you get to the point of implementation.
Let me know what you think we should do about it.