Ok, so I came at the B2 with a multi-pronged attack....first, I mixed some of the ocean grey with some Luftwaffe grey violet to darken it up a bit, and thinned it a lot. I sprayed that as a filter over the whole aircraft. Then I used Tamiya smoke to almost post shade the aircraft, followed by a flat clear.
i am pleased with how it looks. once the flat has dried, I just need to mask the open bomb bays and spray it white and paint the munitions....I will add pics when I get home....