Remember white wall tires? Rather than have just black tires like we do today, we cash-strapped teens would buy white plastic rings to go on black walls to make them look white.
Lol!
Like the "low budget" color TV sets, where you placed a semi-transparent multicolored plastic film over the screen. The top 3rd was tinted blue (sky), the middle I think brown?, and the bottom, green (grass). They actually sold this crap in stores, comic books, and mail catalogs.