You could be onto something here. The black does look good, and on TPWW's latest video he shows it close up. He seems concerned that they appear to be just painting over broken foam and fibreglass, but to me that black - whether the final coat/colour or not - does look a bit thick and "rubbery" so maybe it's a more protective material than just paint?
Also, he spots these wooden cut outs:
Now of course they could be for just about anything at the moment, but with the fact that the eye stalks have been removed, in that 1994 artist's drawing the arms and claws look like they protrude from somewhere near where the eye stalks were
and the shape of these wooden cut-outs, could these be the frames and skeleton for these claws?
From: https://www.youtube.com/watch?v=HikQiQED0Mw