Don't flame me here guys, I know the right way to do it would be painted with clear coat tinted w/ black, but... I have tinted a few friends windows, and did a fine job, and I was wondering, if I can save a few bucks temporarily and tint my lights w/ regular film window tint. As long as I clean the surface well, and keep it nice and wet while im applying the tint, and once it dries, where would the problem be? what would be different having tint stick to plastic versus glass? Any obvious reasons im missing as to why it would fail?