Not only is Air Force One, in reality, a military aircraft thus subject to exacting standards of military color scheme, it is the Private a/c of PotUS. We need not paint it up like a circus.
It's current scheme is recognized world wide. It is stately, professional, clean, and neat without seeming pretentious or braggadocious or arrogant.
And last time I checked there IS
a flag on the tail. The only other decoration necessary is the Seal of the President of the United States, which adornes the forward fuselage below the cheat-line.
FOR THOSE THAT FOUGHT FOR IT, FREEDOM HAS A FLAVOR THE PROTECTED WILL NEVER KNOW OR UNDERSTAND