There are (already!) a number of programs around that let you edit the OS X preference files with a GUI-based tool as opposed to the command line. These give you easy access to settings such as dimming hidden apps in the dock, showing hidden files in the GUI, changing Cocoa apps default fonts, etc. Here are pointers to a couple of them that have been updated for OS X Final:
TinkerTool from Marcel Bresnik Software
osxsettings from jxzz.com
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Mac OS X Hints
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