/// <summary>
 ///     Hookup to value handler method to get notified when FillColor value has changed.
 /// </summary>
 protected override void OnValueChanged(EntityTypeShapeBase element, Color oldValue, Color newValue)
 {
     base.OnValueChanged(element, oldValue, newValue);
     element.OnFillColorChanged(newValue);
 }
 /// <summary>
 ///     Hookup to value handler method to get notified when FillColor value has changed.
 /// </summary>
 protected override void OnValueChanged(EntityTypeShapeBase element, Color oldValue, Color newValue)
 {
     base.OnValueChanged(element, oldValue, newValue);
     element.OnFillColorChanged(newValue);
 }