title: background color change in stackpanel
body: <p>I have stack panel in hyperlink button on button click i have to change stack panel background</p>
  
  <pre><code>              &lt;HyperlinkButton Name="WhereToStayButton" Margin="0,0,0,0"  Grid.Row="5"  Click="WhereToStayButton_Click"&gt;
              &lt;HyperlinkButton.Template&gt;
  
                  &lt;ControlTemplate TargetType="HyperlinkButton"&gt;
                      &lt;StackPanel Orientation="Horizontal"   Background="#EBEBEB"     x:Name="sp1"&gt;
                          &lt;Image Source="/Assets/Menu/wheretostay.png"   Stretch="None"/&gt;
                          &lt;TextBlock Text="{Binding Path=LocalizedResources.menu_where_stay, Source={StaticResource LocalizedStrings}}" VerticalAlignment="Center" Margin="5,10" FontSize="26" Foreground="Black" FontFamily="{StaticResource CustomLucidaGrandStyle}"/&gt;
                      &lt;/StackPanel&gt;
                  &lt;/ControlTemplate&gt;
              &lt;/HyperlinkButton.Template&gt;
          &lt;/HyperlinkButton&gt;
  </code></pre>