The dealership used a film called Laminex on the lights. this is a gel like coat, but can be cut as required and fits like normal vinyl.
I ended up cutting the centers out of mine as they were affecting the lighting just to much.
The second part was to use the same vinyl that they used for the bonet ect and create an eye liner around the light.
and that is it... tinted lights.
I hope this was to some extend helpful..
This is as she is now... had to change the hood as there are two idjits in our town that did the black hoods... I hate copycats (That live in the same town... I can still help you!! haha.)