I think you could touch up the faded numbers with nail polish. Take your glass plate to the nail salon. The girls that work there will be thrilled to find the exact color match. I did that with hubcaps and hood emblem for my '66 Toronado. They were tickled pink to help find an exact match.

1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)