Beg for help! Sensor problem for d600.

What was the ambient temperature, and how long has the camera been in use? Any long video recording sessions just beforehand?

I've seen a D40 do that in hot weather, and my D7000 produced *one* frame with pink/purple noise on the far right - it was a very long exposure of about a minute.

Other than that, chroma noise does normally go a little into pink if you push it... or use extreme ISOs.