Kien
I have some mission models zinc chromate green which seems to be common for people to use on USAF ww2 interiors, but some people also use the dull dark green. I'll see which one I use... maybe just stick to the zinc chromate green instead of buying another bottle of paint.
Depending how accurate you want to be, bubbletop Jugs had a dark green interior. I remember reading that they called it "Republic Dull Dark Green". You could add a touch black and blue to your ZC green which would get you close. I always do that but start with Tamiya Deep Green as a base.