Well, by Sonic-blue, I mean “Mario & Sonic at the London 2012 Olympic Games-blue.” The bundle includes the blue Wii console, matching blue wiimote and nunchuk, a sticker sheet, and a copy of Mario & Sonic at the London 2012 Olympic Games.
This version of the console is also a new edition, which does away with the GameCube games and accessory backwards compatibility. As of now, it will only be releasing in Europe on November 18, 2011.
UPDATE: This type of system also does not have built-in wi-fi. As if that was a deciding factor when purchasing a Wii. Zing!