They were all gold when produced, but the foil sometimes fades to silver on Topps sets from this time. I'm not sure what causes it but I've seen it happen on cards I pulled from packs myself.
VERY slow trading due to health problems. Not transferrable so safe to trade with, just moving is painful and can't always access the cards.
Cardboard History My COMC
New Collection Website: Cardboard History Gallery (Still under construction)
Tips on how to make your scans look like the card does in hand (No more washed out, fuzzy scans!):