i found a couple of sites(dont have the url) that recommend RC car window tint spray. I went to my local hobby shop and found some. It is made by "pactra" and is sold in a 3oz can for about 4 bucks. Just use this, and apply a few(probably up to 5 or so) smooth coarts from about a ft away keeping steady motion,and then apply some enamel that should look nice. the model number or the spray is RC294, hope that helps. I have 2 cans that i didnt use because of local law