Create New Skin
If none of the available skins meet your requirements, you can create your own. When you create a skin, you use an existing skin as the starting point for the new skin.
Note:
Creating and editing a skin is a complex task, requiring knowledge of CSS and how the skin is used in page templates. While you can develop skins in WebCenter Portal as described here, the editing capabilities are limited. Oracle recommends that developers use JDeveloper to develop skins for portals. New skins can also be developed from scratch using JDeveloper. When fully developed, the developer can upload skins directly to WebCenter Portal (the portal server) for immediate use or for testing. Alternatively, the developer can export the skin to a file and upload the skin to WebCenter Portal later.
If you choose to create a skin in WebCenter Portal, giving you the option to later refine it in JDeveloper, you can do so at the application level or at the portal level. Application-level skins are available for use in all portals, unless the portal has been specifically excluded. Portal-level skins are available to use only in the portal in which they are created.
To create a skin: