If you are outside of Japan, but want to buy a K-x in one of the 96 extra body colours available there, this guy on Flickr, via eBay, is offering a service to order and deliver you one.
His example orange one:
His description of his offer:
Quote: Oh, and just for kicks I've made an ebay listing if you want the special colors I'll order it it and send it to you. The price, btw, is my costs+$50. Paypal, ebay fees, and shipping add up unfortunately.
Pentax K-x Orange+Black (I love it!) on Flickr - Photo Sharing!
I have nothing to do with this guy, so ask him any questions directly.
It's interesting that there seems to be this sort of market developing for those colourful K-x's. I wonder what sort of demand he has had so far.
FYI only, caveat emptor etc etc.