variations in owner's manual holders

[AlfaGTA]

In looking at owner's manual plastic holders last weekend in LA, several differences were seen, and I was wondering if there's a way to date them by the colors on the inner surfaces.
All are red on the outside. One has red pockets and gray on the inside surface, one has red pockets and green on the inside surface, and one has green pockets and green on the inside surface.
Any thoughts? Thanks, Bill Morris

[911T1971]

I recall there was an specific answer by member Soterik, they do came in grey, blue and some in green liner.
Mine is burgundy-red w grey liner, came w a RoW 71T and most likely w the car since day one.