Haven't had a coffee-fueled idea in a while, but caffeine makes my brain whir at frequencies even I can't begin to comprehend. For some reason I was thinking about color wheels, and I cross-reference every thought I have with knitting. (You see where this is going, right?) A knitted color wheel!!! How sweet would that be?!
Also, would it be weird to request a 19th-century treatise on colour by Goethe from my local library? At least it would be translated from German. And it's 1400 pages long...