The tint your speaking of is called "Nite shade" and is in a silver bottle with a guy w/ sunglasses on. I had this stuff on the tailights of my 87 GN and used about 3 coats and it looked sweeeet

During the day you still could see red even w/o using the brakes and at nightime it was perfect! Just an FYI...oh yeah they sell it at Ramchargers or probably any big automotive chain.
Roger R