Camo paint schemes are actually pretty much useless for aircraft, with the exception of the real low-and-slow bubbas (helos, FAC(A)s). Otherwise dark paint just makes you stand out against the sky.
During the latter half of WWII, when the Army stopped painting up the bombers (saved a lot of weight, and "didn't need" camo paint anymore with the Luftwaffe and IJAF OOC), they discovered that bare metal actually made pretty good camo. Unless you directly catch sunlight reflection, you just tend to reflect and blend in with the surrounding sky color. They learned that the hard way after a sudden spate of mid-airs during bomber group rendezvous over England.