Oh, found this on the blade forums as well. The guy there said he uses this on blackened gun metal and it works well.Exactly. I'll be driving past an Apple Store today so I might just stop in. Depending on how busy it is. But yea I'm not going to claim it. Just annoying that I bought the sport strap to avoid it and on the first day I wore it....
http://www.topgunsupply.com/birchwood-casey-super-black-instant-touch-up-pen-flat-black.html