I am seeing strange off-color pixels on my Wii occasionally. This happens for example at the title screen of Smash Bros. Brawl, and in various times in other games as well. I don't know if this is natural or interference of some kind. I have never seen anything like it on a different system, and it looks more "digital" than "analog" if that makes any sense.

My component cables are not the official ones, but they seemed pretty solid to me. This happens in both standard definition and 480p modes.