It happens on every window that I open.
I have tried to manually change it from the windows colour and appearance settings but on restart it resets.
I have tried changing the theme sometimes it works and sometimes it is ineffective.
I think it is something to do with registry files that needs to be edited because any other way will not work since it is just reset on start up. I have also look don the net but I couldn't find anything and I don't think that Packard Bell has a forums since I tried looking for that also.