Happy Chinese New Year everyone...
I spent a bit of time digging up genuine colour photos of WW2 vehicles, to get a better idea of the colours and the weathering. Here are a few (I'm sure some of you have seen some of them before). I've tried to find photos that haven't been re-touched, or colourised. I haven't adjusted them at all. There are a lot of famous colour photos from Signal, but they tend to be very washed out, probably as a result of the limitations of colour printing at the time.
US jerrycans. The colour seems different to olive drab on most of them, but you can see some darker ones. Note the weathering, and the spot of red near the handle.
A beautifully clear photo of a jeep (it looks fairly new). Note the colour of the stowage, and the way the dust has accumulated.
A French Sherman, probably an M4A2 and probably also quite new. Note how dark the olive drab is, and the light colour of the dust. The appearance of the tracks and stowage is also interesting.
Early Churchills in training. This shows how mud accumulates, and the different colours that result as it dries. Note also how the paint tends to wear away rather than chip.