protected override void OnLoad(System.EventArgs e)
{
base.OnLoad(e);
DocumentViewer.BackColor = ColorHelper.GetControlColor(LookAndFeel);
LookAndFeel.StyleChanged += LookAndFeel_StyleChanged;
}
void LookAndFeel_StyleChanged(object sender, EventArgs e)
{
backstageViewControl.Office2013StyleOptions.HeaderBackColor = ColorHelper.GetControlColor(LookAndFeel);
}