I am pretty sure that the cockpit is interior green or for me at the moment MM 1715 Here is the thing. I really want to use bronze green or Hu75 but that would make it pre 41 and -4 did not start to roll out until mid 41, so I would think that most would have been painted int green. I hear some may have been painted bronze from GM at the beginning of -4 production I am probably ok using bg, but if I decide to close one gun port on each wing and make it into a FM1 then paint would be wrong. That being said. If I want to paint it yellow, at the end of the day it is mine to do as I please.