My baby (2009 Avail 3) is teal, white and aluminum, with black saddle and bar tape (doesn't show dirt).
Black with a pastel, if done right, can look pretty good. Would I buy a pink bike? No. I've also come to realize that while I like certain colors, they aren't necessarily ones I'd put on a bike. For bikes, I like bold colors and high contrast. This means that despite the fact that I like the Bianchi signature color, I probably wouldn't buy one. Blues, reds, black, and a darker green are high my favorites. The bikes I'm drooling over are some combination of black, white and red--looks good and and it's an easy combination to match.