I just tinted my own front windows. It was easy. Not anywhere near as hard as people were making it out to be and saying only a profession has to do it..etc.
I picked 35% but it looks darker in the pics. My STi is also 35%.. I like that percentage because it cuts the uv, is not bad in the day time and at night time you can't see into the vehicle. I should say certain times during the day it may look lighter or darker..etc.
It matches the rear window nicely.