What is clear is that most surfaces including woodwork should be painted lustreless Olive Drab (although a semi-gloss finish is more practical to keep clean). It's possible to argue all day about what is the correct shade of Olive Drab. I am aware of all of the points about aging and colour shifts, weathering and different paint formulations used by parts contractors but I still maintain that most NOS 3/4-ton Dodge parts that the writer has seen appear to be painted with OD which has a distinct blackish or greyish tinge to it - not the yellowish/olive type that seemed to be used on early GMC's etc. and not the lighter OD seen on later model jeeps. In the end, it is really a matter of personal taste, so find a shade of OD you like and use it. The engine bay is one area though that is not universally OD.
Engine block, cylinder head, bell housing, oil filler pipe, generator mount, waterpump and fan pulley, thermostat housing, crank pulley, manifolds, oil filter mount on head, Carter carb. airhorn, all engine sheet metal, gearbox except shift tower which is olive drab.
Oil filter housing and bands, radiator fan , starter, generator, horn and horn bracket, air cleaner, Zenith carb. air horn, engine breather/filler cap.
Background colour for all distributor data plates and 6 volt electrical data plates.
Background colour for 12 volt electrical d/plates.
Generator regulator cover.
"STARTER COIL REGULATOR" lettering on firewall. In approximately 5/16th." or 7mm block capitals and seemingly applied by way of a stamp to the rectangular pressing just below the generator regulator.Click for diagram.
Bryce Sunderlin (writing in Army Motors #43) has suggested that the early model 1/2 tonners which used the smaller 201 & 217 CID engines were painted in the silver/aluminium engine colour used by Dodge for civilian production. The later 230 CID engines were all painted in the light grey colour mentioned above. This sounds plausible as Bryce is usually very knowledgable but I have been unable to confirm this for sure.