When you click on Appearance, on Windows systems, you can
select the look & feel that you prefer.
Available are Native (Windows 7) and United Planet.
On Mac systems,you can select between the Look & Feel options
Native (Mac OS X) and United Planet. For Mac OS X
Aqua you can define if the system menu bar is used and if
the design is displayed in brushed metal style.
The changed settings will only take effect on Mac and Windows systems
once the Portal Manager is restarted.