Got another idea for ya!  Many of the old military heavy lifters were bare metal with black on the radar dome, or a lome green color back then and even the tri color camouflage paint schemes .  An example are the old C-123's (baby 130's) with the Air America decals on the rear quarter of the fuselage (port and starboard side respectively).

Here is a picture of an Air America C-123 being restored by the Air American Foundation.

http://www.aerodata.org/C-123

http://www.airamfoundation.org/images/Dave-Krochmal.jpg

http://www.airamfoundation.org/images/Ed-Allen.jpg

(Notice the Air America wing decal on the bare metal tail)

A bare metal Air America C-123 ( Note the Air America decal is close to the jump doors)
https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/csi-studies/studies/winter99-00/pg81.gif

Air America Patch
https://khunnamob.globat.com/backup/khunnamob/www.khunnamob.info/board/photo/mXT0HkNN/php4Crmy.jpg

Anyways just a few more ideas. :)