They look great. You should be able to get a legion of soulless automata all set to kill all humans in no time.
They have a great Military Hardware look. The odd patch of Navy Grey or Howard Green would set them off nicely.
I reckon that Hat Guy is right: just a little bit of hand painted detail will distance the figures from the dipped look. Patches of military colours would definitely look cool, but might make them look like they were manufactured by robots, for humans rather than manufactured by robots, for robots.
That might be what you are looking for, but if its a Terminator type vibe that you are going for then personally, I wouldnt use camo patterns. I would go for bar codes or something like that I think.
They look cool regardless