Try some Acetone! If paranoid just test a small spot first, betcha it works, that **** takes all paint off badges down to the chrome base and doesn't eat the chrome, standard procedure in the explosives world for clean-up and desensatizing of tools and equipment.
Edit: chewy;s method would work but time consuming and trickey if your not well versed in that kind of work, My second Option would be some BRASSO on a Rag!