you'd be surprised how little a difference it makes to the amount of visible light, even during the day. as long as you dont go mental with the tint spray it is fine (you can tell its fine in this example because you can still see the light sections through the tint)
ALso like jug said if you only put a few coats on of the tint spary and dont go mad, it really dosen't make that much of a difference. My old punto pasted an MOT with a light smoke on the rear light without hesitation! Defiently an effective mod on a black stilo, ive been contenplating doing mine for a while but think id need to smoke the window too to make it blend with out colour minimad
the brakes are green jug, its an xbox stilo i tried to mix the xbox green its just about the same but its a really wierd colour to get right. i was drag racing at usc last year and i done some at the auto italia show too. it was a 1.8 mg zs i was racing. i done an 18.1 at the italia show which wasnt bad for a 1.6