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Some great info and some fine modelin'. Geo
Yes, the RAF Dark Green should be fine. Normally, I add just a tiny touch of black, in order to make it very slightly darker, providing contrast against the camouflage colour on the aircraft itself. I also normally add a bit of 'weathering', in the way of scratches, dust or dirt marks, where the bombs have been dirtied in storage on the ground, and rolled around. Just a hint of this gives more authenticity, as in the P-47 items below.
Love this plane, always have. When I get going on mine this thred shall be a requirment. NICE WORK
Here you are an enlarged area of the first pic posted by Terry. I hope it can help.
View attachment 261595