There are just certain things that require the right tools, talent and skill. I believe this is one of them. But I sure like it, though now I'm one of "those" people.
Check your local state Tiny Laws: http://www.tintdude.com/laws.html
Tint is measured as in how much light is let in so 5 lets in 5% light, and it as dark as you can get. the higher the number, the less amount of tint.
Do NOT even try to drive with illegal tint. Police have nothing better to do than pull over Mercedes owners with tint that's too dark. Don't even try it.
The picture is with 5% back and rear windows and 35% front.