Styled GridSplitters

src/Perspex.Themes.Default/HorizontalGridSplitter.paml

@@ -1,8 +1,24 @@
 <Style xmlns="https://github.com/perspex" Selector="HorizontalGridSplitter">
   <Setter Property="Height" Value="6"/>
+  <Setter Property="Background" Value="LightGray"/>
   <Setter Property="Template">
     <ControlTemplate>
-      <Border Background="{TemplateBinding Background}"/>
+      <Border Background="{TemplateBinding Background}">
+        <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
+          <StackPanel.Styles>
+            <Style Selector="Ellipse">
+              <Setter Property="VerticalAlignment" Value="Center"/>
+              <Setter Property="Width" Value="4"/>
+              <Setter Property="Height" Value="4"/>
+              <Setter Property="Fill" Value="#404040"/>
+              <Setter Property="Margin" Value="1"/>
+            </Style>
+          </StackPanel.Styles>
+          <Ellipse/>
+          <Ellipse/>
+          <Ellipse/>
+        </StackPanel>
+      </Border>
     </ControlTemplate>
   </Setter>
 </Style>

src/Perspex.Themes.Default/VerticalGridSplitter.paml

@@ -1,8 +1,24 @@
 <Style xmlns="https://github.com/perspex" Selector="VerticalGridSplitter">
   <Setter Property="Width" Value="6"/>
+  <Setter Property="Background" Value="LightGray"/>
   <Setter Property="Template">
     <ControlTemplate>
-      <Border Background="{TemplateBinding Background}"/> 
+      <Border Background="{TemplateBinding Background}">
+        <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
+          <StackPanel.Styles>
+            <Style Selector="Ellipse">
+              <Setter Property="HorizontalAlignment" Value="Center"/>
+              <Setter Property="Width" Value="4"/>
+              <Setter Property="Height" Value="4"/>
+              <Setter Property="Fill" Value="#404040"/>
+              <Setter Property="Margin" Value="1"/>
+            </Style>
+          </StackPanel.Styles>
+          <Ellipse/>
+          <Ellipse/>
+          <Ellipse/>
+        </StackPanel> 
+      </Border>
     </ControlTemplate>
   </Setter>
 </Style>