DSi Blue
The Nintendo DSi was originally released only in black and white in the UK but is now available in 3 more vibrant colours - Metallic Blue, Light Blue and Red.
The new colours were released in the UK on October 23rd and they make for a pretty good variety between them - although the DSi red may appeal to some fans as a next best thing to the Pink (which hasn't as yet appeared) the Light Blue (pictured here closed) could be very adaptable as a unisex colour.
The Metallic Blue (pictured here) is a more obvious 'boy's choice' and looks pretty cool. The new colour DSi versions all come with matching stylus, and although the inner workings haven't changed at all the software has been upgraded to include a Facebook photo uploading feature and the Flip Note Studio - great for doodling on the move.
See the links above to find the best price in the market for all the DSi colour variants.