I like OSX, but I have no idea why Apple forces its users to choose between graphite/aqua and themes that may be wiped out with the next incremental OS update.

Vote to say if you think Apple will ever include GUI customization as part of the OS. Feel free to discuss why this hasn't happened yet.

Even Windows XP lets its users have more control over GUI look and feel. Isn't Apple supposed to be the company that thinks different.