Factory colours

[cletrac (RIP)]

Here's another colour question to ponder. I have a 1940 C8 and a 1943 HUP. They are both that yellowish green khaki colour on the interior and underneath even though the HUP exterior was oversprayed blue for the Navy or Air Force. That HUP made in August 1945 that was in Sask was the same, as were all the CMP's I've come across in the boondocks.(approx. 20 or so) Were all the CMPs except the ones that went to the desert painted this basic colour or am I just not coming across the other colours? I would have thought that by August 27th. 1945, they'd have gone to O-D if there was to be a change. What was the original undercarriage colour on the ones that you guys are working on? Here's a picture of an F60L and an F15 chassis to illustrate.