I seem to recall back in the 80's there was a styling trend for reflective panels with the name of the car on it called a 'backflash'. Like the Heckblendes they usually went between the lights on, mainly on Astras and XR3's.
The "backflash" was the rear window sticker that said XR3i, GTE etc. I'm sure that the reflective rear panels were called er reflective rear panels. They can with some nice atractive numberplate relocators as well iirc.
