This is a good info. Thanks.
I think using interior green would be justified since the color will fade anyway, plus if viewed in such dark environment darker will loose a lot of details. Having black details on top of dark green may create very dark effect and all the work on the cockpit details would be lost in darkness
When I saw this cockpit of P-47N (Norma) I almost painted my cockpit with this scheme
but I decided to go with interior green what gave me pretty good contrast and keep everything very close to what I saw on other aircraft (P-47s)