Tom Schindl and Kai Tödter already blogged about the new Eclipse e4 ThemeManager. If you want to use the Eclipse ThemeManager and CSS Styling in Eclipse 3.6 you find an adjusted example “org.eclipse.e4.ui.examples.css.rcp” in the e4 repository. This example demonstrates the usage of the ThemeManager and Theme switching during runtime in Eclipse 3.6.
This is the colorful example. In case you are impressed with the design I would like to mention that I designed it myself. 😉
For the German Eclipse fans their will be an article in an upcoming Eclipse Magazin describing in detail how to set this up.