There are a LOT of places that sell headlight film and it's very easy to apply. I also add the film under the door pulls to prevent fingernail scratches. You can either buy it in sheet form or pre-cut. Just google it.
http://www.pelicanparts.com/cgi-bin/smart/more_info.cgi?pn=PEL-H9906&catalog_description=Lens%20Protecting%20Film