Light Slate Grey / Dark Grey / Dark Grey / Light Slate Grey

3 factory colors named Light Slate Grey / Dark Grey / Dark Grey / Light Slate Grey, from 3 makes

Color	Make	Code	Years
Chevrolet Light Slate Grey / Dark Grey / Dark Grey / Light Slate Grey 13D	Chevrolet	13D	1981–1987
GM Light Slate Grey / Dark Grey / Dark Grey / Light Slate Grey 13D	GM	13D	1981–1987
Oldsmobile Light Slate Grey / Dark Grey / Dark Grey / Light Slate Grey 13D	Oldsmobile	13D	1981–1987