Add support for Dan Colen's confetti paper palette

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Dan Colen creates mixed-media, sculptural, and painted works that locate interest and magic within the seemingly ordinary and undervalued.

A recent post includes his color palette, that has some interesting names like "Emerald City" or "Swamp Thing". Check out https://artsy.net/post/marinakcashdan-bird-sh-star-t-bubble-gum-and-crack-pipes.