K-7M's kung colorableness

K-7M's kung is still not properly colored, except for few trivial elements, makes it look weird and not match any of the available color schemes.
FlCbVdcC3n.gif
In compare K-700's kung perfectly matches whatever color is choosed on its whole body, so the decision to left out K-7M's kung's body from being colored is peculiar.
ucGkN6FlMa.gif