I have one and it was a dirty green color, one way was to color match the paint in automotive paint and spray it on after it was cleaned up.
What I did was dissemble the camera completely and go through every part with a clean scrape buff polish and adjustment. I have a buffing wheel so I took every part and got right down to the metal. Then I primed and painted it BLACK instead of the green color. Why? I prefer black to the green on them.
The stainless steel was easy to get the sparkle back, the aluminum cleaned up very nicely too. It's an new old camera. The bellows was like it never saw the daylight, I mean really new. The tap on the bellows fits on the the pin in the front standard when the bellows is not fully extended. That prevents bellows sag. There are two holes for a wire frame that supports the dark cloth. The two stainless steel clips that have the holes are to keep the rear rail up when the camera is folded up.