Quoted from stpcore:
Hey Pin Guy. Thanks for sharing that translite pic. I'm in the printing business and have printed some alternate translites, decals, etc for pinside members. I'm betting if I sent you a blank translite that you placed behind the current translite it would solve the problem of having the clear portion expose the LEDs and PCB stamp since my translite blanks are frosted. If you would like to PM me I'll send you a blank for free and you can install it to see if it's a viable option. Happy to help if you'd like?