Install update -
MaxxAir II covers were a breeze to install, the Smoke coloris just for looks, There was very little to no change on the amount of natural light that comes through.
As for the [B]FanMate cover[B] it did not work on my Tracer 3150 as there is a vent exhaust tube about 5 inches from the Fantastic Fan vent cover, and the FanMate was HUGE (tall and long) and prevented it from properly fitting.
I would still recomend a FanMate cover, but you should ensure there is no interference around the vent cover. I'll install another MaxxAir II there and it still will do a fine job with air circulation.
Thanks again everyone for the helpful information.
2003 Maxima GLE
2010 370z Convertible 6 Stick
2011 Expedition 5.4L 4x4 Limited
2012 Tracer 3150BHD Touring Edition