The green/red scheme fits it more than the blue/white one, though the blue/white still looks nice.
Holy ****.
And it depends on what you want to do with the mech. Both colour schemes look sweet, but obviously the green one is more menacing, whereas the blue one looks more majestic. I like the blue one aesthetically, but in the case of a darker sort of robot, I'd say the green would work better.
And just sayin'; the chest looks like origami to me for some reason. It's neat.
Someone must write this battle