Ha! glad you took it in the humorous vane it was intended.
AFA the olive drab, it could just be my LCD monitor. Other people will have to chime in too - I wouldn't rely on just one person's opinion. My opinion is that is should be darker with more brown, but that is just me. I'm not positive either that early war US fighters used the olive brown drab color. I know that the early P-47s and P-51s were referred to as being painted brown drab, but not sure about 1941 colors. They may have been more of the flat green like a Jeep or other Army vehicles.
Anxious to see your version of German iron - and how is it that we do not have Gunther Rall's 109 already?! Anyway great opportunity for you--I think your style will look especially good on German a/c.