In order to style the popup you should edit template of the RadRibbonGroup
and find the RadRibbonDropDownButton
control part named CollapsedButton
and edit its DropDownContent
the Telerik team
Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!