Stock original looking alternator vs black one to match pulleys

I did cast my vote for the stock gray, but the black does look nice. We had a old gent in town worked on alts and starts in the back half of his garage. Dropped off what you wanted fix and then pick it up the following day. He always spray painted the alts with just a wisp of black paint across the top. I guess maybe it was his way to be marked done? So when ever I see a black alternator I think, rebuilt......