This appendix shows how each of the quick start layouts are affected when you choose to apply themes to them. ADF Faces provides a number of components that you can use to define the overall layout of a page. JDeveloper contains predefined quick start layouts that use these components to provide you with a quick and easy way to correctly build the layout. You can choose from one, two, or three column layouts. When you choose to apply a theme to the chosen quick layout, color and styling are added to some of the components used in the quick start layout.