What I was considering was a vacuumformed clear acrylic custom shaped visor that was spraypainted gold from the interior, but left transparent just the viewing area in the front. Then you could mount a gold HJC visor inside of that, to cover the transparent section.
It would be uniform from the exterior, would look solid gold, and be transparent enough to see though.
The double clear/solid gold like you suggested would work, but might slightly break character... in appearance anyway. Whenever you were walking around or doing anything you'd have to let people see your face inside...