Remember Roy G. Biv?

When you’re little, you spend a lot of time thinking about colors: You have favorite colors, and you learn about Roy G. Biv — that little mnemonic to help you remember the order of the rainbow.

But there are things you maybe didn’t learn from your grade school teachers and their slide projector presentations, like why the Simpsons are yellow or that there is, in fact, a word that rhymes with orange.

As part of NPR’s forthcoming series on color, we’ve compiled some surprising #colorfacts into a weird little lesson, with visuals inspired by the 1950s work of professor Arthur C. Hardy of MIT.

Interested in a musical accompaniment? Listen to some mood music as you make your way through the rainbow.