Index: Core/Common/src/Core.Common.Gui/Forms/MainWindow/MainWindow.xaml
===================================================================
diff -u -r6765941efdf6123e2fc45ccd280cdfbe7b8e9041 -r16337b65166362334102ad291d47c8e91f935de6
--- Core/Common/src/Core.Common.Gui/Forms/MainWindow/MainWindow.xaml	(.../MainWindow.xaml)	(revision 6765941efdf6123e2fc45ccd280cdfbe7b8e9041)
+++ Core/Common/src/Core.Common.Gui/Forms/MainWindow/MainWindow.xaml	(.../MainWindow.xaml)	(revision 16337b65166362334102ad291d47c8e91f935de6)
@@ -144,6 +144,10 @@
                     <Trigger Property="IsPressed" Value="True">
                         <Setter Property="Background" Value="{StaticResource DeltaresDarkerBlueBrush}"/>
                     </Trigger>
+                    <Trigger Property="IsEnabled" Value="False">
+                        <Setter Property="Background" Value="{StaticResource DisabledInputBackgroundBrush}"/>
+                        <Setter Property="Foreground" Value="{StaticResource DisabledInputForegroundBrush}"/>
+                    </Trigger>
                     
                     <DataTrigger
                         Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type metro:MetroWindow}}, Path=IsActive}"