You're one 100% correct. I thought that looked ridiculous, and one of the worst aspects of the film (amongst others). The reasoning behind the whole movie-verse aesthetics is one giant contradiction. They needed to make things realistic so they had to look like this, yet they have mass shifting giant cubes, a robot head that transforms into a super slim cell phone (one of the other more ridiculous transformations in the film) and even the designers admitted that the transformations were inconsistent, so then what was the point of making the bots look like they did? Realism? Really? However, I don't think a lime green and purple robot would look good unless it was in a cartoon. Just like a robot that transforms into a handgun that needs to be carried around doesn't really scream threatening tyrant, and who uses tape decks anymore? Some things should stay in the 80's, and even if Devastator looks like some mess of a monkey, I'm actually glad they choose to do realistic colors, and I think the vehicle mode is fantastic.