I just returned my $100 DS to Target for another one because it had 5-6 dead pixels on the touch screen. This new one doesn't have any but the top screen looks *slightly* darker than the bottom one and has a very light shade of magenta in it. I don't remember seeing this in my other DS that I returned but I do have a NES-style SP that has the exact same problem with the magenta.
Is it like this with all DS screens? I know I'm being picky here, but I studied color photography for several years and a color imbalance like this is really obvious and annoying to me.