I did these past couple of weeks, paint the chest, head, arms, and legs sections. The chest was painted in a model color dark blue. The machine gun inside the chest was painted in model color gray.
The head was painted in a model color white. I usually do the eyes with a metallic color that is painted over with a clear coat. This time around I tried out a solid color for the eyes.
The feet repeat a few colors. I used model color steel on the piston looking foot parts and model color old gold for the bottom of the pistons.
On the knees I painted them white used a german grey to paint the little bolts on the knee.
For the metallic paint on the legs, I used a gunmetal grey.
It took awhile and quite a bit of painting. But the rest of the body.