the only wheel options i've ever seen in the sales brochures have been chrome or silver painted versions of both the split & solid 7-spoke 16"s, and then the chrome 18" salad shooters from the H3x... but then again, i've been unable to find the 2007 & 2010 sales brochures for 100% verification.
every black OEM-looking wheel i've found on searches seems to be plasti-dipped, rattle-canned, or powder coated by whatever reproduction company or retailer is selling them.
...but now i do seem to remember reading something a few years ago about the H3T factory spares being black (which, if true, is lame because that precludes 5-tire rotations & shortens the life of the set if you're too OCD to drive with a mis-matched wheel). i could see someone piecing together a set of those - similar to how people started snatching up the solid 22" transit wheels from when the factory sent the fancy upgraded Escalade & Denali 22"s boxed up in the back of the truck for the dealer to swap after shipment... or people using the 2004-2006 GTO spares as cheap drag skinnies.