Richard Hughes is taking pre-orders for his new invention, the ColorHug, an open-source USB device that generates an icc profile for calibrating your monitor. On the one hand, our inner biologists giggle at the idea of matching a single RGB spectrum to the diverse response profiles of real human cone cells (fun experiment -- mix a pair of monochromatic red and green light sources to match a monochromatic yellow source, then ask a friend to do the same and revel in the perceptible difference), on the other hand, our inner control freaks think this is the coolest thing since sliced bread. If the voices in your head think this would be a cool toy, head over to the pre-order page to help make it a reality.