title: How do I set the background color for a active caption frame with wxpython or wxformbuilder
body: <p>I'm new to wxpython and I'm using wxformbuilder to design most of the my forms but I'm unable to determine how to set background color for the active caption in my frame ?  Do I do this in code or is there a property within wxformbuilder I can set ?</p>
  
  <p>thanks in advance,</p>