Version History
v2009 vol 3
Centralized Control over Visual Themes within a Specific Window
In v2009 vol 3, we've introduced a new DXWindow class. This class can be used instead of a standard Window and is intended to provide centralized management of DevExpress visual themes for all controls within a specific window.
Colorizer Tool
If you're not satisfied with default palette, provided by any DevExpress WPF Theme, now it's possible to adjust it as you need. Colorizer is a handy tool which enables you to change different parameters of theme colors, such as total number of colors, their brightness, conrast, saturation, as well as the multi-sampling rule.

Blog: Sneak peek: Fun with colors and themes in WPF