If you have patience, look for foil chrome at a hobby supply place. Model car builders use it to simulate chrome trim on model cars. It comes in sheets and has an adhesive backing. It's very thin so you have to be careful. Sort of like gold leaf. You cut it with an exacto knife, and push it into place with your finger or a Q-tip. I've used it to replace the plastic "chrome" trim on other vintage car bezels, most folks would never know the difference. Looks more authentic than just silver paint, since you can't tell it's been re-done.
Similar product:
http://www.bare-metal.com/bare-metal-foil.html