Of course I know about Orion slave girls, my comment about the fact I'm a gay guy should highlight that we never saw any Orion dancing BOYS in Trek.
Besides, Orion's are emerald green, a colour not even close to human so yes that is exotic, no problem there, and Brainiac-5 wears in well.
Poison Ivy as shown in the Batman Animated revamp was not nearly such a vivid shade. She was pale-greenish white which to me just looks like a "normal" corpse (or how I imagine one). The fact she shifted to a slightly stronger green in the DCAU comics doesn't change the fact I didn't find either shade attractive.