Back to the issue of your aluminum Goldwing rims..
Don't know exactly about those particular rims. But when I visited Motegi/Honda restoration facilities in Japan..they painted everything that was aluminum (cases, heads, rims, fork tubes, etc.). Only things not painted (but even then) were polished parts..like alternator, primary-clutch covers.
I didn't think it all looked as original as I remembered bikes new..but could see where they didn't want to spend all that time cleaning, repolishing old aluminum..and it looked better than old oxidized aluminum. So..since then..I've kinda felt that if it's good enough for Honda..then can't be all that bad for restorations..if you don't want to disassemble, clean, repolish all that old aluminum, chrome.
Ja