This 24-inch LCD panel from Eizo coverts standard-color graphics into those viewable by those with color blindness. Called the "FlexScan SX2461W-U," it has all the standard trimmings, including two DVI inputs and a USB hub. It's going for $1,250 in Japan, although it appears Dell has imported older models from Eizo before, so it may be purchasable from them in the future.
For those who might wonder if it is possible to do the same thing in software, there appears to be a program called eyePilot that does something very similar.
FlexScan SX2461W-U, the 24” LCD designed for “colorblind” people [Akihabara News via Gizmodo]