I am using RibbonControlLibrary by Microsoft. It has three predefined themes and one can use them by
<ResourceDictionary Source="/RibbonControlsLibrary;component/Themes/Office2007Black.xaml"/>
or
<ResourceDictionary Source="/RibbonControlsLibrary;component/Themes/Office2007Blue.xaml"/>
or
<ResourceDictionary Source="/RibbonControlsLibrary;component/Themes/Office2007Silver.xaml"/>
How can i define my own custom theme for this Ribbon? Is there any custom theme available?