Just found this over on ebay, gotta be a collectors item:

Sega Dreamcast Limited Edition SILVER Console / System ! Boxed + Manual ! Japan ( RGC250710006 )

Description / Condition :
Used, tested and working well. This is a rare limited edition silver console that was only released in Japan.

Includes silver Dreamcast console, matching controller, AV cable, power cord and papers.
The console casing looks very nice over all. There are some very light scuffs on the top of the lid but otherwise it looks nice. No fading.
The controller is working well , all buttons and triggers tested. Manuals are straight and come in plastic baggy.
Box is original with the official "limited edition" silver sticker on the top left corner. There are some scuffs and a bit of wear on corners and edges but no fading.

A very rare item from Japan for any serious collection.

Plays Japanese NTSC games only. Please make sure you know how to power and use this system in your country before bidding. (^-^)
All items are Japanese versions. Items ship from Japan.