ThemeChanger

ThemeChanger switches your theme in Mac OS X. It supports the .theme and .dlta formats, and generates an aqua backup automatically. You can also restore the aqua backup via single-user mode, if an installed theme damages your system. ThemeChanger is fast, free, and most importantly, easy to use.

Version 0.6.1 adds the following:

• Now has an icon.
• Can now import dlta themes by double clicking them, or dragging them onto tc's icon in the Dock.
• New theme list view, it's not complete yet, but it works well.
• You can now resize tc's window. - Interface changes.
• Fixed crash when tc finds a problem in a theme.
• Fixed a bug where tc would hang if tool crashes while installing
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Requirements

Mac OS X 10.2 or later