I've been having a problem finding one too. I finally decided to get a DS (lite) because there are simply too many games on it that I want to play. By some sick cosmic joke when I decide to get one they no longer exist in American stores (in my area).
I'm new, by the way.
EDIT: Wow, what a streak of luck. Just a few minutes after posting I called all the Sears stores in the area and one of them about 45 minutes away had 2 blacks, a white and a pink. So I reserved a white to pick up first thing tomorrow. It seems Sears has been receiving shipments today (both Sears that I called, anyway) so call all the Sears's around you.