title: Why isnt my Background color working in a ComboBox
body: <p>The only part of my Combo Box that isn't working is the Background Color. I want the whole thing to be yellow. But the collapsed part is still just gray.</p>
  
  <pre><code>&lt;ComboBox Height="25" Width="125" Background="Yellow"&gt;
      &lt;ComboBox.ItemContainerStyle&gt;
          &lt;Style TargetType="ComboBoxItem"&gt;
              &lt;Setter Property="Background" Value="Yellow"/&gt;
              &lt;Setter Property="BorderBrush" Value="Yellow"/&gt;
          &lt;/Style&gt;
      &lt;/ComboBox.ItemContainerStyle&gt;
      &lt;ComboBoxItem Content="One"/&gt;
      &lt;ComboBoxItem Content="Two"/&gt;
      &lt;ComboBoxItem Content="Three"/&gt;
  &lt;/ComboBox&gt;
  </code></pre>