that stuff on his chest and face are bandages. And in my opinion they should be white, with black lines, because even if it's entirely cliche it works as far as colors go with this guy. Eye should remain gold, as should all the gold bits in the cyber limbs. I suggested changing the coat and the shoes to beige or khaki so the body wouldn't be overloaded with grey, you get the grey hood and pants with a brown-ish coat and shoes, then you make all his bandages white and you have some variety of colors that are all pretty soft and won't draw attention away from the cybernetics.