Oddly enough, my favorite looking DS system was the light blue DS Lite. I usually don't like that shade of blue at all, but I think it worked great with the system.
I actually imported that in 2006. Then the hinge broke a year later. Sent it in to Nintendo, and they replaced it with an American one of my choice of color. So I went with pink to be a rebel, and I still have that to this day.