I do believe this is an A, and it is very black as of D-Day.
http://en.wikipedia.org/wiki/File:P_61_with_invasion_stripes.jp gThey may not have come from the factory in black, but I have found many images that indicate A's and B's were painted black in significant numbers while being flown during the war.
This aircraft simply isn't needed in any way shape or form... but it is so cool, it should be in the planeset anyway.
Given some people like to fly A-20s and B-26s like they are fighters, why wouldn't there be a sizable number of people flying this plane?
Kind of like a slower Mosquito and maybe a tad more maneuverable?