Depending on the subject, Corsair II's ranged in color from Gull Gray (FS36440) over White to overall Gull Gray and finally to the Tactical Paint Scheme (don't remember the FS numbers). I'm not a modern jet guy, but served in an A-7E squadron in the early '80's. Internal paint was the same regardless of the exterior.
The wheel wells are all glossy white, but give them a gray wash as they got dirty very fast. The wheels had a red-brown to pink tint to them because of the brakes. Sometimes the pink fluid (don't remember which one that was now-hydraulic?) would be inside the wells. Struts were all glossy white as were the wing fold areas. Natural metal areas, except the shock struts, were coated in a reddish-brown preservative to protect them from salt spray. Noticeable area would be the wing fold pins and the hinges on the av-bays and wheel well doors (inside).
The avionics bays were also glossy white, again with a wash. We painted them white because it was easier to keep clean and FOD free. The LOX bottle is a zinc-chromate green. The avionics boxes were either a dark gray or black, depending on the box. The black actually looked like a very dark gray, not a true black.
No OD paint, but the padding on the ejection seat would be OD.
On the colorful jets, Gull Gray over White, we'd wipe them down with a fuel soaked rag to keep them nice and clean between missions. The smooth epoxy paints made that real easy; and yes it was not a smart thing to do given how much the fuel could chemically burn the skin. I'm sure breathing it wasn't a good idea either but we were young...and indestructible.
If you want to go all out, ensure you put "Remove before flight" tags on it. The gun pin tag streamed out the gun access door on the ground so all could see it was "safe".
Hope this helps, mostly from memory as I wasn't allowed to take photos back then, there was a [cold] war on...
Tim