TT Interior Aluminum Trim Finish
 

Sorry for posting this twice:

The TT A/C Vents & Shift Base Ring. I'm trying to match the Factory Finish on a Billet Aluminum piece. Does anyone know for a fact what the OEM finish is? A metalurgist looked at the shift base ring, and told me he's 99% sure it's "Powder Coated" Aluminum, with perhaps a clear coat.

Does anyone happen to know for sure?