Fan Casting Secondary Color Nemesis in Sort by Tropes

Green, or green and purple together are especially popular among the Super Villain set. This is likely due to them being bright, eye-catching, and an easy contrast with the reds and blues favoured by so many early superheroes. Green and purple can have negative cultural associations (see Green Is Gross, Sickly Green Glow, and Technicolor Toxin), and in contrast to red or blue they inevitably come across as less desirable. Orange tends to be used less and is frequently an accent color as it can be a bit harder to distinguish from red or yellow depending on the lighting. Black can still come into play as an accent, just as white sometimes would for the heroes.