You can but this stuff called NIGHT SHADES , you need to prep and clean the area, then use a light sand paper so the paint holds, you do light coats untill your at the effect you like. The problem is that some cops dont like it and will give you a hassel. For the better look i would recomend buying them but the can of sray "night shades" is like 15 bucks, and i dont know how much the new lights are?