does anyone remember the traditional DIY tinting method, a bit of black paint (15%) mixed with lots of laquer (85%) sprayed on the insides of your glass, it works a treat but you need to remove the glass first obviously. thats the good old fashoned way to tint windows as seen on many boyracer cars in the 80's. its easy to do, well easy if you can get your glass out and you happen to have a sprayer handy. the advantage of paint is that it doesn't bubble or peel and its really cheap too. haven't seen it done for years now