Swiftech appears to have a CES monopoly...
here they are in a Corsair system
http://theinquirer.net/?article=20567
and in a Voodoo PC SLI system
http://theinquirer.net/?article=20551
etc etc.
not that I can blame any of those companies - now that Swiftech offers the MCW600Xs in multiple colors, what better way to coordinate with your particular product?
Corsair (DFI?) seems to like Black/Green, Voodoo likes Black/Red, I think ATI is using Copper/Blue.. proof that a little bling goes a long way.