Replace the glass
A couple of years ago I was having a new windshield put in and priced the cost of replacing the glass with aftermarket tinted at Mesko on RT 46 in Fairfield NJ, cost was around $1000 installed and included the rear hatch w/defroster grid, both rear side windows, all 4 rear door windows, ~$1200 with the two front windows. This has the tint built into the glass not put on top. Also if I remember right it was avail in different tints too, black, green, bronze, smoke and a couple of other weird one's. All but the smoke and black were special order with 4-6 weeks delivery. Another alternative would be to find one in the boneyard and swap your glass out but thats alot of work if you don't know how to get it out of that channel they seat it in.
RichP