Everything: '86 Mainframe
I've always liked Mainframe. Growing up watching the cartoon was my first exposure to the character as he wasn't a part of my collection until 1993 when I purchased a duffel bag of GI Joe figures off one of the kids in my class. If I had one gripe about the original figure, its that he didn't come with an actual weapon or side arm.
This simple repaint was inspired by his Sunbow appearances, I always dug the two tone look as opposed to the all gray uniform.