Below is an excerpt from a Nintendo Press Release:

To bring a little color to the winter months, Nintendo will release two new colors for its Wii Remote™ controller. Starting Feb. 14, the controller will come in Pink or Blue and will be bundled with a Wii MotionPlus™ accessory. Along with the current White and Black versions of the controller, now every player in four-player matches can have his or her own color.

Nintendo of America will be releasing the new Wii Remote colors Valentine's Day, I assume for couples (guys get blue, gals get pink, if following traditional logic) in North America. A price has yet to be determined, but expect it to be Black Wii Remote priced as it comes with MotionPlus and the extended Wii Remote Jacket.

Neither color seems interesting enough for me to pick one up, but if they had pimpin' purple or blood red...

Source: Nintendo PR