[Llarry]

Discussing colors and markings on military aircraft is a good way to get into an argument, but I would say that my favorite of all time is the livery on VF-84 Jolly Rogers F-4 Phantoms of the 1960s-70s. This photo is an F-4N from 1975.

Here's a close runner-up, though; another F-4N but from the VF-161 Chargers based in Japan. VF-161 later got F-4Ss and ultimately was replaced by a Hornet squadron.

Note that these were the days when all the aircraft were colorful; not just the two per squadron allowed these days.