It might stick for a day or two or maybe even a month, but in the case of the head/tail lights, if its laid on the outside (and if the headlights were glass)it would scratch/nick and look horrible in a week. Tail lights are typically sprayed, I think Torque did it to his old E34 if I remember correctly. The spray tint on the tails might last 6 months or so. The plastic in the back window is flexible and the tint wont hold on anything flexible.
-There are 10 kinds of people. Those who understand binary, and those who do not.
-If we ever forget that we are One Nation Under God, then we will be a nation gone under...Ronald Reagan