public void SetDefaultEmptyValues()
{
// set background color values
this.specialBackColor = Color.Empty;
this.normalBackColor = Color.Empty;
// set border values
this.specialBorder = Border.Empty;
this.specialBorderColor = Color.Empty;
this.normalBorder = Border.Empty;
this.normalBorderColor = Color.Empty;
// set padding values
this.specialPadding = Padding.Empty;
this.normalPadding = Padding.Empty;
this.specialBackImage = null;
this.normalBackImage = null;
this.watermarkAlignment = ContentAlignment.BottomRight;
}