Beamer's MW Prime Colored

Lines by [link]
Colors by me, [link]

Beamer's sketch of Machine Wars Optimus Prime was so incredible, I couldn't help but give a shot coloring it. I actually started out coloring this pic as Thunderclash (from whom MW Prime is repainted), but before I even finished the flats, a buddy of mine at work commented on how ridiculous the color sheme looked. He kinda had a point, so I switched gears away from early 90's UK exclusives, and toward Machine Wars.

This is only my third real attempt coloring a Transformers pic with Photoshop, so comments and criticisms would be greatly appreciated so that I can learn and improve. Thanks!