Favored Freeware: CaminIcon

CaminIcon allows you to change the Camino user interface by installing icons and other application resources such as nib files and preference panes. CaminIcon comes bundled with a small set of icon themes. CaminIcon copies graphic user interface files (toolbar icons, etc.) from its own Themes folders into the Resources folder of Camino.app and replaces the originals. The application previews the new icons in a simulated browser window.

Pros: If you use Camino and desire a change of scenery, then CaminIcon is for you!

Cons: None significant.