My son has a white Nintendo DS, which is got broken eons ago, and a blue Nintendo DSi. My niece has her own Nintendo DSi that's colored pink. Pink is her favorite color so it's a no-brainer that she'll chose a pink colored DSi.
Playing Nintendo's together is my son and niece's bonding time this summer break. They download the same games and connect it, don't ask me because I don't know how -will ask them later, so they can play it together. They can see the same things on their individual screens, how cool is that right?
I'm waiting when they'll have their next huge fight. But it hasn't happened yet. I guess growing up does that, they now get along well. Thanks you Nintendo for that!