On my 1993 YJ plow jeep, I had the hardtop sprayed with Raptor liner at the body shop I used to work at. Came out real nice, almost the same texture as factory. The key is to not put it on thick. Light passes.
Here is a pic of the top, now granted, it isn't clean because the jeep is in storage for the summer, so it has some dust...but you get the idea...[IMG]