Nice try from both but I'm afraid it looks nothing like a glukkon.
I did some thinking - Maybe if you simply left the arms black, maybe make something like this perhaps, but try and make the joins between limbs and body as seamless as possible? (Yeah I know it's crap, I'm tired and did it in about 30 seconds) They're in a dark room, and a skin like this should work provided they don't walk. Yeah it'll be a compromise since you can't have invisible parts, but it's better than not at all.
