u/stellarscheme

I’m looking for a way to dim the brightness of this neon. From my understanding a dimmer could cause problems and damage the sign. My only thoughts would be to take it to a tint shop to get it sprayed with an automotive headlight tint or to add a tinted plexiglass piece of acrylic in front of it but could see problems with both of these options. Is there any safe way to dim the brightness of a neon sign??