You ruin the point of having springs at all, just spend a little money and buy lowering springs that were designed to still provide a lower stance while retaining the function of the spring. They are designed to gradually get stiffer as the spring gets compressed, you are cutting off a vital job of the spring by removing a coil, thus hurting your handling and your butt at the same time. I know it's cheap, but don't be that guy.
I don't know about tint though dude, I'm actually thinking about some myself before the summer comes.