Theme / window style

Problem: You want to change the colour of the windows, from this lame grey, like you do in Linux or Windows. You don't find the settings in Mac OS X.

Solution: It is not natively possible in Mac OS. Hey, you don't get many colours of MacBook either. I guess that's Apple's strategy.
However, it is possible to change the style of the desktop under Mac OS Leopard with this free software called Magnifique:
http://magnifique.pcwizcomputer.com/

Once installed, you can browse through user-made styles and try them. Very nice!

Tip: If the theme doesn's seem to apply to the menu bar, you will need to disable the bar transparency for it to apply. Go to the:
-System Preferences
-'Desktop & Screensaver' section
-'Desktop' tab
-There is an option called 'Translucent Menu Bar'