powdercoating seat belt buckle...
The buckle itself could be powdercoated black. But if I do go with harnesses, it's a moot point, although I hear people that DO have harnesses saying it's a pita to put the harness on just to drive to the store...
However, if any of you diehard race fans do decide to go the harness route (assuming you already have a roll cage in your car, etc) - I'd suggest when you order your brackets from wedge, that you consider ordering them without the seat belt buckle attachment. It will probably make sliding the seat back and forth a little easier - right now it's a bit tight on the transmission tunnel.
Cheers,
-Darryl