These are not great photos, just some I found on the internet. One is before the LEDs and one is after. As you can see the surface is a dome, and the dome is far from wrinkle free, which is very challenging when wrapping the strait LED units around the curve. I have, somewhere, pictures of the same fixtures placed up against a typical theater cyc prior to being installed in the Tabernacle, which I will try to post, as that is more of what you are insterested in. Also, I will go take a few nicer photos of the current rig, particularly showing the 3 rows, and upload them shortly.
If you do a google image search for Mormon Tabernacle, anything before 1997 is standard incandescent and after 1997 is LEDSelador fixtures for the cyc.