This example illustrates how to override default colors from an existing color scheme in Windows 10 XAML controls. In the current implementation, the background of the RibbonControl header is overridden to #FF217346 in the Generic scheme and to #FF093467 in the Win8 scheme.
Colors should be overridden within a separate ResourceDictionary file. Then, this dictionary should be used in the Source property of the GlobalColorSchemeOverrider class.
All colors available for overriding are listed in separate files within the installation folder with our controls: <DevExpress Installation Folder>\Components\System\UAP\ColorThemes