Here is a pic of a pattern used by USMC Stuarts in the Pacific.
I think that most were just Olive Drab with camoflauge being applied at the crews discretion.
David
On the bench:
1/35 Tamiya M26 Pershing-0%
1/144 Minicraft P-38J Lightning-50%
Numerous 1/35 scale figures in various stages if completion.