Are they OEM wheels, or aftermarket Marchesini? I didn't know that either were anodized. I'm not familiar with the re-anodizing process, but you may be better off having them powder coated.
The forged Marchesini wheels on my new (to me) 748s are just painted, and the Marchesini wheels on my 900SSie were painted as well. I stripped the paint off the 900SSie wheels with aerosol paint stripper (and a LOT of elbow grease) and gave them a two-toned brushed/polished finish.