Creating skin for ADF Application

A skin is a global style sheet that affects the entire application. You can create one skin for the entire application . Every component will automatically use the styling as described by the skin. Any changes to the skin will be picked up at runtime, no change to code is needed. Skins are based on the Cascading Style Sheet (CSS) specification. You can also dynamically switch skins during runtime.

In JDeveloper 11 you don't need to write a complete skin just to change a single component. You can extend an existing skin.

To create a skin, you can refer this document.