This option will help you to set a portal-wide default skin for portlets:
1.Select a skin from the available skins list.
2.Click Set as default portal skin. If no default skin is set for a theme, the portal
default skin is used.
The changes will be reflected when the page refreshes.
10.4 Portlets
Portlets page in Portal Administration includes four portlets:
Install
Manage Applications
Manage Portlets
Web Clipping
You can use these portlets available under the Portlets section of Portal
Administration to install portlets, manage Web modules and portlet applications, ...
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