This example demonstrates OneNote style Tab Control. The sample demonstrates also how to style 
UI elements through code. To achieve this use <strong>Selectors</strong> and <strong>Behaviors</strong>.<p>
    <em>

FillPrimitive fill = (FillPrimitive)new ClassSelector("TabFill").GetSelectedElements(item)[0];
fill.BackColor2 = color; </em>
<p>
The <strong>ClassSelectror</strong> object if responsible for traversing the UI tree and finding the corresponding 
element(s) within. The class names (<strong>RadElement.Class</strong> property) of different elements in the UI 
hierarchy can be browsed, using the <strong>RadControlSpy</strong> tool.<p>
    <em>

item.AddBehavior(new TabItemSelectedBehavior(this.radTabStrip1, color));
...
public class TabItemSelectedBehavior : PropertyChangeBehavior
{
  public override void OnPropertyChange(RadElement element, RadPropertyChangedEventArgs e)
  {
    if ((bool)e.NewValue == true)
    {
      ClassSelector selector = new ClassSelector("TabBaseFill");
      FillPrimitive fill = (FillPrimitive)selector.GetSelectedElements(this.tabStrip.RootElement)[0];
      fill.BackColor = backColor;
    }
  }
} </em>
<p>
The <strong>PropertyChangeBehavior</strong> class is used add custom functionality when a <strong>RadProperty</strong> is changed.
To add behavior to any <strong>RadItem</strong> use the <strong>AddBehavior</strong> function. Inherit your class from 
<strong>PropertyChangeBehavior</strong> and override the <strong>OnPropertyChange</strong> function.