Hello Scott,
Hope you had a good holiday weekend! I spent hours experimenting with that silver leaf material that was not durable enough after it was applied. I have a guy in Detroit that does my vacuum form plastic chrome but the results were too bulky and "deliberate" looking. I finally found a silver urethane that look almost just like the chrome finish on the original pieces. You can't see it in the pictures but it has an excellent look when compared to the originals. Since everything is applied with an airbrush the finishes are perfectly smooth, unlike the marbled finish you get when a paint pencil is used. There is nothing that looks worse on these face plates than the "homemade" look of inconsistant paint pen strokes.