Simple question (I hope).

I am using a ribbon control to drive my form.  Each group contains several tools.  The desired functionality for me is that when a a tool button is clicked a user control appears lower on the form, which is working just fine.  However, the button itself appears to remain highlighted.  

What I'd like is for the tool buttons to return to their normal unhighlighted state after each press.  

Is there a property I need to set to remove thehighlighting that appears as a result of the tool selection?

Thanks,

Bob Barnard