>>10215217Good question. I guess there should be a reason to why their masks in Metru Nui were half uncoloured (bare protodermis?)
Now that I think about it, in many of the cg animations the inactive Kanohi masks are dull silver in color, and after the Toa wear or "power up" them, they take the elemental color of the carrier.
Matoran only have weak elemental powers dormant in them iirc, so maybe they're unable to do the same.