I don't know about the availability of covers but I have painted lights in the past. I painted and wet sanded a pair of honda lights for a friend to eliminate the orange. They came out killer, the trick is to put thin, even coats of paint. I have also used transparent paint from a hobby shop that is used on models to paint lights. You may want to look into something light that. Try looking for "transparent glass paint". This would be completely illegal for sure. Also keep safety in mind if this car is on the street, especially at night.