The fork leg refinishing will deserve special attention and study. My plans first are to remove the existing finish and decals, either chemically or by gentle mechanical means. I tried doing this 15+ years ago with the original Mag 21 SL I owned, and I found that I could gently remove the lacquer with a gentle brush attachment on a drill press. After removal, I'll try polishing and buffing the legs if the oxidation doesn't prevent that. If corrosion is too severe, I'm going to try to find a chromed spray I can apply. The goal here is to get a highly polished mirror like finish, either with the native magnesium or with the chromed application, and then coat that with a gold laquer. I'm thinking one of the more brass-like tints from Nikolas, who makes lacquers for brass instrument refinishing and such, might work. Then I'll apply the new decals and do a clear lacquer over that for extra depth and shine.
I may experiment first with a gold spray paint, like Montana Cans Goldchrome or Design Master Gold Enamel, but my experience with these simple spray applications is that they always fall way short of actually looking like gold, or the gold lacquer that was stock on these forks. Jassa Bikes (Marcelo) in Brazil has given me some hints, but none of his products are available in the States, so I either have to find U.S. analogs, or try other methods, like described above.
Wish me luck and as always, I'll post my progress.