Hmm, I'll have to research about tinting the plastic.
I would like to buy MR10-coated Lexan to use on my rear hatch and fit it myself. It's scratch-resistant as opposed to most other hatch materials that scratch and fog easily. They really do look like crap closeup or when you're trying to look out the back window on a sunny day.
This MR10 stuff is pretty good from what I've read.
If you can't tint it, maybe use some of the spray-on tint on the underside of the hatch.