I need because :
I want to get around the problem of Enhanced User Interface not compatible after installed a patch.
AIEXTERNALUI empty during patch (viewtopic.php?t=48165
I use Black Surface Theme.
I set The Enhanced User Interface to "Only for Install".
After doing that, in Maintenance dialog the textbox controls are no transparent : the backcolor is white, it sould be black.
I have the same problem for checkbox controls, and Group Box.
But it works for the static text controls, they are transparent.
I want to test refresh dialog at the initevents to correct the problem.