Some things in book and film are pretty obvious when it comes to color. The dude in black is probably your bad guy; the guy in white is probably your hero. Sure, I could begin the obvious social commentary to which that leads...but my readers are smart and I'm sure it's nothing that hasn't crossed your mind. Like that double negative.
But what about all the colors in comics? Surely you've noticed some of the pattern. Here to fill in the gaps are several infographics by colourlovers.com. They do a pretty thorough job in a pretty *ahem* colorful package. Enjoy.