Er, yes that's over the top by miles - but the Japanese love colourful little gadgets. The K-x has a whole range of colours and, while I initially turned my nose up at them, I'm starting to come around to them -
there's a selection of their colours here.
How about the Olive Green (or Brown) for the Army, Navy Blue for the sailors and a nice pink one for the RAF? ;-)
I quite like the 'Metal Grey' or Blue.