Grid screen questions

Hi,
is there a way to use 2 different grid screens in an app so that one screen has a “GridScreenFocusBorderSD” & “GridScreenFocusBorderHD” and the other does not?
Or, how is the case handled when grid the rows may have different size poster art; is the only option to have no border or did I see an example of that somewhere once?.
thanks

sorry to answer my own question but i think this might be how: viewtopic.php?f=34&t=63706&p=409883&hilit=theme+change#p409883
change the theme, then change it back again after the alternate grid is closed.