I have a Williams woodrail which had all the wood trim painted black.
I sanded the rails and trim, then wiped them down with lacquer thinner. Then, I brushed on a water-based clear polyurethane finish. The results yielded a brand-new look, which is what I wanted.
Regarding your "Silver", are you sure the original rails are not under the faux
metal rails? I have a "Wagon Train" which had been fitted with some type of aftermarket metal rail, but the original wood rails are still on the game under the metal. I've seen this done on bingo machines as well.