New Post: Backgorund of LayoutDocumentPane

<ResourceDictionary>
         <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="/Xceed.Wpf.AvalonDock;component/Themes/generic.xaml" />
         </ResourceDictionary.MergedDictionaries>

         <Style x:Key="MyDocumentPaneControlStyle"
                TargetType="{x:Type xcad:LayoutDocumentPaneControl}"
                BasedOn="{StaticResource DocumentPaneControlStyle}">
            <Setter Property="Background"
                    Value="Green" />
         </Style>
      </ResourceDictionary>
</local:DemoView.Resources>

<xcad:DockingManager DocumentPaneControlStyle="{StaticResource MyDocumentPaneControlStyle}">
....
</xcad:DockingManager>