Change the header of pop up

Change the header of pop up

  
Hello,

I want to change the header background and text color of pop up's header. Currently I am using London theme. Any idea how to customize it? Which CSS class to edit?



Thanks,
Suraj Borade
Hello,

Is anybody aware about this?
div.os-internal-Popup .os-internal-ui-dialog .os-internal-ui-dialog-titlebar
div.os-internal-Popup.os-internal-ui-dialog .os-internal-ui-dialog-titlebar


Thanks Carlos. I will try it.