Just ran into this blog post http://homepage.mac.com/hms92/iblog/C183740000/E20051224104250/index.html What do you guys think? He has a point IMO, especially when I have a number of these Mail-themed apps open and hit Expose. I often have to run my mouse over the window to get a description of it just in order to see what app it is exactly. Perhaps this is a reason why Apple has the several themes going on right now, with iTunes, iPhoto, Mail etc all sporting different looks. But all I ever see is people moan about the lack of consistency on this front. I think so that as long as the actual interface is consistent - be it clickthrough, dialogues, preferences etc, then the look of the app can vary. If people want it to be the same throughout, then maybe offer colour variations in the titlebar that you can specify per app, or another solution. Otherwise, the very essence of Expose becomes diluted. What are peoples thoughts on this?