WELL not to be mean or judging but i think they are illigal and you could also get the blackout covers i got pulled over twice just for those but i told them i didnt know and the were removable and he was cool if i took em off
light tint is illegal in most places (if not all?). If your going to do it anyways though make sure its not TO dark. Putting on film would be the easiest i would think. That way you can get the shade you want and not have to worry about it not being uniform like you do with a spray.
Alright just a heads up I bought tints for my 04 tail lights and they were a b**** and a half putting them on plus now (about 4 months later) every time I wash my car little black residue gathers up on the bumper. They look awesome but I probably should of went with covers or the smoked tail lights because I don't see these lasting more then a year or two. And believe it or not two days after putting them on I got rear ended luckily the cop was mustang guy and didn't say anything about them being illegal