My long time Boeing Bud' Micheal Lombari, who is director for the archives can double check the paint scheme for us. I have his E mail and phone...
Also I remember seeing some beautiful old vintage Boeing drawings made for the special projects modelmakers of the 80-A in the drawers of the archives. I would bet the color scheme of that old 80-B is also available on request.
The late Pete Bowers knew more than just about anyone...when it came to the 80-A & B..when he was doing R&D for his book.
(Flybaby Pete Bowers) was an amazingly gifted Boeing Modelmaker as well...and saying that is was addicted to airplanes...is truly an under statement.