That time of the war in the Pacific, some of the pre-war tail stripes etc were showing up on a lot of fighters. Some of the early Jugs were getting stripped down to bare metal and all sorts of fancy paint jobs were showing up.
It was all part of being on the winning side at that point and looking for a fight. OD went away and color was the way to go. Here I am, come and get me seemed to be the attitude.
The fuselage stripe was probably just his way of having fun. The tail stripes were a group wide marking on Jugs, 51s and even some of the 38s in 5th FC.