In conjunction with the April 26 release of Final Fantasy XII: Revenant Wings for DS, Square Enix and Nintendo are set to release a special edition of the DS Lite with the FFXII:RW logo and a few main characters emblazoned on the front. Square Enix did a similar promotion for the DS release of Final Fantasy III.
Though the extra cost to paint an industrial-strength sticker is probably minimal, it's not like Nintendo needs any help selling the consoles in Japan. A release outside of Japan is very unlikely for the limited edition console, so those desperate for a unit will have to import. However, we have a better suggestion: wait for someone to post a high-resolution image and then make your own sticker to put on that DS Lite (or DS Phat) you're already using.