Well, green's just unfortunate.

An example:





She looks ready enough to go while training to bring pride to her reptilian overlords, but in a casual setting of urban life subverted by inter-galactic conquerors she'd look like an idiot and not inconspicuous at all. Green hanging out of her head. No, no, no.


Why would a company design such a thing in such an imposing colour?

A possible answer:





She looks confidently subservient and ready to be taken care of.
Only a bit douchey, she blends in better and maintains covert protocols to be a useful drone in the enslavement process.