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Sorry to put you to so much work!
It is said it was the colour called Blue de Nuit ( the night blue
The colour for these wheel bays can be either FS26440/36440 or FS34226.
oncerning the bomb bay.... it seems that it should be of the same cockpit interior colour with steel/silver weathering. Also it is suggested that it was either the Chamois Sable ( sand )
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. I would follow the first idea and use the cockpit interior colour overall the fuselage interior.