The default skin can also be configured through the portal configuration files if you do not want to use the admin user interface. This will allow the portal to have the new default skin ready when GateIn 3.2 is initially started.
The default skin of the portal is called Default. To change this value, add a skin tag in the 02portal.war/WEB-INF/conf/portal/portal/classic/portal.xml configuration file.
To change the skin to MySkin, you would make the following changes:
<portal-config>
<portal-name>classic</portal-name>
<locale>en</locale>
<access-permissions>Everyone</access-permissions>
<edit-permission>*:/platform/administrators</edit-permission>
<skin>MySkin</skin>
...