Putting my suggestion that the gloves should match the boots, brown leather is a neutral so it functions that same as when the brown bomber jacket is...
I believe the OP was referring to characters actually being painted alien colors (like Zoe Saldana as Gamora in GOTG) as opposed to the strange skin...
The animated series got lots of mileage playing Kory as the wide eyed alien waif warrior so I wouldn't dismiss the possibility of live action taking...