Anyone played around with lens protectors or tinting ??

Hey everyone, just curious has anyone ever played around with this kind of film? http://cgi.ebay.com/ebaymotors/12-x12-Tail-Light-Signal-Tint-Film-Blue-Yellow-Smoke-/180548244255?pt=Motors_Car_Truck_Parts_Accessories&hash=item2a0983931f#ht_2301wt_738

I have a bunch of clear left over from doing my headlights and have used it on my flashlights. I was thinking of getting some yellow for my flashlights when it snows. I know the white light on snow can sometimes cause a huge glare.