In regard to the Trinitron--make sure the cables are in tight.

We used to have this problem in labs all the time with the 12" RGBs on LCs. They would develop a condition my computer teacher used to call "pink-itis" in which the screens would have a pinkish tint to them. It's really common on this particular display (in fact, when I was testing hard drives in an LC II last month, it happened to me).

Is it an Apple-branded Trinitron or an actual Sony?