The Talking Moose misses the Grouch, too. Yeah, I admit it, I'm shamelessly plugging my app. That's because I think there's nothing wrong with the "Delicious Generation". I actually *like* that I can tell which window is iChat, because it is brushed metal, and which one is mail, because it's that odd variant of Unified. We have enough pixels, so small variations in design are OK.

But, to mis-quote Dijkstra: "Transparent windows considered harmful". Either be very careful (as with HUD windows) or leave it be. Window content still needs to be readable.