I'm looking at getting some new tunnels off ebay, something like these: I've only ever bought earrings that are stainless steel and silver in color, but now that I'm getting some black tunnels I want to make sure that the paint won't rub off over time and/or possibly infect my piercing. So I'm wondering that "anodized" means? I see a lot of descriptions that say the tunnels are made of surgical steel with like "anodized black titanium coating" or whatever. Is it safe to go with something like that? Any help is appreciated.