The Clear method removes all elements in the
FormatAppearances collection. Excludes the
exPivotBarAllowFormatAppearance flag from the PivotBarVisible
property, and so no FormatAppearance objects are displayed on the control's
context menu. The Remove method
removes a FormatAppearance object giving its key. Use the Add method to add
a new FormatAppearance object. You can use the for each statement to enumerate all objects
in the FormatAppearances collection.