Hi,
You can set the property DockingManager.DocumentPaneControlStyle and modify the base style for LayoutDocumentPaneControl :
You can set the property DockingManager.DocumentPaneControlStyle and modify the base style for LayoutDocumentPaneControl :
<Window.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="/Xceed.Wpf.AvalonDock;component/Themes/generic.xaml" />
</ResourceDictionary.MergedDictionaries>
<Style x:Key="myStyle"
TargetType="{x:Type xcad:LayoutDocumentPaneControl}"
BasedOn="{StaticResource DocumentPaneControlStyle}">
<Setter Property="Background"
Value="Green" />
</Style>
</ResourceDictionary>
</Window.Resources>
<xcad:DockingManager DocumentPaneControlStyle="{StaticResource myStyle}">