It was a little disconcerting. Pink iTunes window under iTunes XP/Vista:

After updating to iTunes 7.7.1, you may notice a pink tinted screen in the iPod or iPhone setup pane of iTunes.

At least this wasn't some allergic reaction to something blowing in the air.

This symptom is usually caused by having the display set to something other than "millions of colors" (32-bit color). Use the steps below to correct the issue.