Agree with your views on the TD wheels - they are much better than the kit offerings. The only beef I have with them is that some of them tend to be just a little too flat, making it look like the airplane is overloaded or the tire is underserviced! Good progress so far, Brian.
Neil, the earlier model P-61's were delivered in the OD over gray, mostly the "A" models, I think. The black came a little later.