Oh British WWII AFV colors are a fun study in change. In a nutshell they started the war in either Khaki (a brown shade) or Medium Bronze Green. After Lend Lease vehicles started to arrive, around early/mid 1944 they adopted Khaki Drab, a shade similar to Olive Drab. By the end of the war they were starting to go back to a Bronze Green on Commonwealth built late model AFVs. The Middle East, Far East, and Western Desert/MTO (Sicily/Italy) had a whole different batch of colors used during the war.