introduce inactive title bar brush

MahApps.Metro/Controls/MetroWindow.cs

@@ -53,9 +53,11 @@ public class MetroWindow : Window
         public static readonly DependencyProperty WindowTransitionsEnabledProperty = DependencyProperty.Register("WindowTransitionsEnabled", typeof(bool), typeof(MetroWindow), new PropertyMetadata(true));
         public static readonly DependencyProperty MetroDialogOptionsProperty = DependencyProperty.Register("MetroDialogOptions", typeof(MetroDialogSettings), typeof(MetroWindow), new PropertyMetadata(new MetroDialogSettings()));
 
+        public static readonly DependencyProperty WindowTitleBrushProperty = DependencyProperty.Register("WindowTitleBrush", typeof(Brush), typeof(MetroWindow), new PropertyMetadata(Brushes.Transparent));
         public static readonly DependencyProperty GlowBrushProperty = DependencyProperty.Register("GlowBrush", typeof(SolidColorBrush), typeof(MetroWindow), new PropertyMetadata(null));
         public static readonly DependencyProperty NonActiveGlowBrushProperty = DependencyProperty.Register("NonActiveGlowBrush", typeof(SolidColorBrush), typeof(MetroWindow), new PropertyMetadata(new SolidColorBrush(Color.FromRgb(153, 153, 153)))); // #999999
-        public static readonly DependencyProperty NonActiveBorderBrushProperty = DependencyProperty.Register("NonActiveBorderBrush", typeof(Brush), typeof(MetroWindow), new PropertyMetadata(null));
+        public static readonly DependencyProperty NonActiveBorderBrushProperty = DependencyProperty.Register("NonActiveBorderBrush", typeof(Brush), typeof(MetroWindow), new PropertyMetadata(Brushes.Gray));
+        public static readonly DependencyProperty NonActiveWindowTitleBrushProperty = DependencyProperty.Register("NonActiveWindowTitleBrush", typeof(Brush), typeof(MetroWindow), new PropertyMetadata(Brushes.Gray));
 
         public static readonly DependencyProperty IconTemplateProperty = DependencyProperty.Register("IconTemplate", typeof(DataTemplate), typeof(MetroWindow), new PropertyMetadata(null));
         public static readonly DependencyProperty TitleTemplateProperty = DependencyProperty.Register("TitleTemplate", typeof(DataTemplate), typeof(MetroWindow), new PropertyMetadata(null));
@@ -91,6 +93,8 @@ public class MetroWindow : Window
         private Storyboard overlayStoryboard;
         Rectangle flyoutModal;
 
+        private Brush savedTitleBarBrush = null;
+
         public static readonly RoutedEvent FlyoutsStatusChangedEvent = EventManager.RegisterRoutedEvent(
             "FlyoutsStatusChanged", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(MetroWindow));
 
@@ -415,6 +419,15 @@ public bool TitleCaps
             set { SetValue(TitleCapsProperty, value); }
         }
 
+        /// <summary>
+        /// Gets/sets the brush used for the Window's title bar.
+        /// </summary>
+        public Brush WindowTitleBrush
+        {
+            get { return (Brush)GetValue(WindowTitleBrushProperty); }
+            set { SetValue(WindowTitleBrushProperty, value); }
+        }
+
         /// <summary>
         /// Gets/sets the brush used for the Window's glow.
         /// </summary>
@@ -442,6 +455,15 @@ public Brush NonActiveBorderBrush
             set { SetValue(NonActiveBorderBrushProperty, value); }
         }
 
+        /// <summary>
+        /// Gets/sets the brush used for the Window's non-active title bar.
+        /// </summary>
+        public Brush NonActiveWindowTitleBrush
+        {
+            get { return (Brush)GetValue(NonActiveWindowTitleBrushProperty); }
+            set { SetValue(NonActiveWindowTitleBrushProperty, value); }
+        }
+
         /// <summary>
         /// Gets/sets the TitleBar/Window's Text.
         /// </summary>
@@ -552,6 +574,22 @@ public void HideOverlay()
         public MetroWindow()
         {
             Loaded += this.MetroWindow_Loaded;
+            Activated += MetroWindow_Activated;
+            Deactivated += MetroWindow_Deactivated;
+        }
+
+        private void MetroWindow_Activated(object sender, EventArgs e)
+        {
+            if (savedTitleBarBrush != null)
+            {
+                WindowTitleBrush = savedTitleBarBrush;
+            }
+        }
+
+        private void MetroWindow_Deactivated(object sender, EventArgs e)
+        {
+            savedTitleBarBrush = WindowTitleBrush;
+            WindowTitleBrush = NonActiveWindowTitleBrush;
         }
 
         private void MetroWindow_Loaded(object sender, RoutedEventArgs e)

MahApps.Metro/Themes/MetroWindow.xaml

@@ -35,7 +35,7 @@
                     </Grid.RowDefinitions>
 
                     <Rectangle x:Name="PART_WindowTitleBackground"
-                               Fill="{DynamicResource WindowTitleColorBrush}"
+                               Fill="{TemplateBinding WindowTitleBrush}"
                                Height="{Binding TitlebarHeight, RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay}"
                                Visibility="{TemplateBinding ShowTitleBar, Converter={StaticResource BooleanToVisibilityConverter}}"
                                Grid.Column="0"
@@ -222,6 +222,8 @@
     </ControlTemplate>
 
     <Style TargetType="{x:Type Controls:MetroWindow}">
+        <Setter Property="WindowTitleBrush"
+                Value="{DynamicResource WindowTitleColorBrush}" />
         <Setter Property="TextElement.FontSize"
                 Value="{DynamicResource ContentFontSize}" />
         <Setter Property="Background"