I thought this was cool. A friend did it and I stole the idea. Thanks, Jon!
In the FFG game Descent, there are four hero archetypes. Warriors have red icons, mages yellow and so on. Painting all of the minis is the end goal, but realistically speaking, isn't going to happen anytime soon. This is the next best thing.
I used some acrylic paint markers that I bought at AC Moore. They're pretty useful. I'm happy with the results and this took about 5 minutes total. They're not in the picture, but I painted the rims of the big bosses (who are the same color plastic) in black.