Yesterday I decided to give WPF a go.  Before I used to use Windows Forms for creating my applications but however, I found that what I wanted to do (expanders, etc.) were not there (even though it would be easy enough to code a custom control that did that.)

So right now I am writing a custom text editor (in WPF.)

Are there any good resources / reads for creating a custom interface? (in terms of colors and styling)

(Also, maybe full screen WPF applications something like Media Center, which IS using a custom UI language from what I remember...)