If you're up for an experiment in how we see color, or more importantly how we think we see color, tonight's the night to give it a try! With the full moon, and a handful of different colored swatches of the same value, you can see how your eyes respond to color in moonlight. Be sure to check out James Gurney's post Is Moonlight Blue? for the complete instructions. He also has a very in depth scientific explanation of how all this works. If that's not your thing, just check out the great samples he's posted of how different artists interpret the color of moonlight.