macmice.com otherwise known as dv forge has a 2 button scroll called the BT Mouse AL - for aluminum. Though the older version was the best, the new one uses laser tracking and a charging cradle which I don't care for as much. I guess you can hide the cradle elsewhere, maybe plug it into the wall via a usb wall plug. I have an older one which I hadn't thought of using with my new iMac that came today. I had to get a BT Mighty Mouse b/c it didn't work well with my Mini. Some sort of interference. Worked great with my 12" Powerbook, just not the Mini, would jump, disconnect and lag. Only problem is I have gotten used to the 360 degree scroll ball of the MM vs. a standard scroll wheel, so while the old BT Aluminum mouse would look nice, I will probably use the white.
Just checked, the BT with cradle charging only comes in white but the corded comes in
silver or I found the original
silver on ebay