The A-26... one of my faves....
The production machines during WWII were all bare metal. Only the A-26A (only one built), B and C prototypes were OD over Neutral Grey. Still, I'd have liked to see the A-26A go into production. It had the same 75mm gun in the nose that the B-25G/H models had. Some punch! As Cuda said, they switched to black in Korea, mainly because they operated primarily at night. The Squadron "in Action" book has got some great photos in it.
I just love the airplane because it had up to 16 .50 cals firing forward, flew at the speed of a fighter and could DOGFIGHT with FW-190s and WIN!