Everything I have been able to find so far indicates that M38A1s in Viet Nam were not camoflaged (SP?), but were painted in flat paint. The Marines (most likely culprits for a '62) used a "lusterless forest green" with yellow numbering and such. There was, of course, no star on the hood. I hope this helps.
I have an unrestored 1962 USMC jeep. It's original color was the USMC green (one color camouflage) in a dull or flat finish. The markings would be the specific chrome yellow that usually has to be custom mixed. The markings are on either side of the hood and the rear bumperettes.
Some of the USMC jeeps of this era have diamond shaped TAC markings. Also sometimes found are tire pressure, fuel tank fueling rate, fording plug info and other instructural markings more associated with US Army vehicles from this time.