Wesley color key ideas #1 (Patreon)

I'm currently placing rail-road tracks in front of a moving train.. As in, I have no idea what Wesley's colors actually are. His moniker is "the green octopus," so I might go with the green / blue idea. 

On another note, I like the grey-red one on the left for the bad-guys, even though it's really simple. 

Colors are difficult for me :P