Here are some earlier colour attempts on Go-Man. I like the shadows on the blue one. They don't follow the anatomy as well but they look good. Good brown on the pants on that green one though. This is a good learning experience for me. I don't usually think of my designs in terms of colour. I have vague ideas, but it's not part of my process. When I see it coloured up it makes me rethink the design. What I try to do is marry iconic superhero design with modern funtionality, thus the boots, Knee and elbow pads, and chiefly, no underpants on the outside. But that doesn't necessarily mean this dude is wearing street clothes and combat boots.
The more I look at the green one, the more Jack Kirby looking it gets.