Styling GridSplitter wpf C#

Question

i want to style my GridSplitter like adding dots on it (as found on http://msdn.microsoft.com/en-us/library/aa970265.aspx).

i also want to change gridsplitter color on mouseOver, or apply Aero Theme.

<Style x:Key="GridSplitterStyle1" TargetType="{x:Type GridSplitter}">
            <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
            <Setter Property="PreviewStyle">
             <Setter.Value>
              <Style>
               <Setter Property="Control.Template">
                <Setter.Value>
                 <ControlTemplate>
                  <Rectangle Fill="#80000000"/>
                 </ControlTemplate>
                </Setter.Value>
               </Setter>
              </Style>
             </Setter.Value>
            </Setter>
            <Setter Property="Template">
             <Setter.Value>
              <ControlTemplate TargetType="{x:Type GridSplitter}">
               <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"/>
              </ControlTemplate>
             </Setter.Value>
            </Setter>
        </Style>

        <!--Theme-->
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="/RibbonControlsLibrary;component/Themes/Office2007Blue.xaml" />
        </ResourceDictionary.MergedDictionaries>

    </ResourceDictionary>
</r:RibbonWindow.Resources>

<GridSplitter x:Name="gridSplitterTreeNodes" Width="10" BorderThickness="1,0" Cursor="SizeWE" RenderTransformOrigin="-1.2,0.507" ShowsPreview="True" Style="{DynamicResource GridSplitterStyle1}">
     <GridSplitter.Background>
      <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
       <GradientStop Color="#FFE3EFFF" Offset="0"/>
       <GradientStop Color="#FFAFD2FF" Offset=".45"/>
      </LinearGradientBrush>
     </GridSplitter.Background>
    </GridSplitter>

Answer 1

<GridSplitter x:Name="gridSplitterTreeNodes" Width="5" BorderThickness="1,0" Cursor="SizeWE" RenderTransformOrigin="-1.2,0.507" ShowsPreview="True" Style="{DynamicResource GridSplitterStyle1}">
     <GridSplitter.Background>
     <ImageBrush ImageSource="Images\gripDots.png" TileMode="FlipXY" Stretch="UniformToFill"/>
        </GridSplitter.Background>      
    </GridSplitter>

You can also save image from Msnd Microsoft to get the same effect.