my two cents on what i see,
i believe the vest is navy blue, and the charcol gray that appears "worn" or "weathered" is r&B polish. I really believe the armor was polished attached to the suit as well as "antiqued" or "black washed" thus creating discolorization to the flak vest! or simply by getting wet and paint smuging, things like that. if you notice the silver areas are at high spots "creases" not in tha crevases! with an orbital buffer going over the armor attached to the vest on a manni, sure make sense why the appearance of the vest looks gray!
just a therory
and for the jump suit...i dont know if anyone has ever got canvas wet, or that sort from cloth world etc....it fades pretty fast! i got some navy colored one time it truned purple when it got wet and washed a few times. at times it looked gray and time it looked blue w/ a hint of a purple hue.
