How to prevent NSControl from graying out when sent to background?

FROM : Greg
DATE : Tue Jun 24 18:28:07 2008

Hi, I'm making little notification windows that contain some 
NSControls in them, one particular one is the NSProgressIndicator (as 
a bar).  These windows are similar to the default growl windows, and 
so appear above all other windows and appear "active" while actually 
being hosted by a background application.  As such, the progress 
indicator in one of them is grayed out, how do I prevent it from doing 
that?

Thanks,

Greg