It seems Nintendo is really trying to push the New 3DS into the hands of the Japanese public, and by reducing the number of colours available on the older units, there'll be little choice for the fashionably minded than to buy the newer system. The Japanese audience were privy to many colours that we in The West were not, but with the New 3DS' Kisekae Plates we should be able to have more customisation than we know what to do with.