I tried to modify several files under addons\skin.estuary\1080i, but all can’t modify the topbar in the OSD window.
VideoOSD.xml, it only can modify the bottom part.
Includes.xml, it can modify the topbar on almost all windows, but can’t modify the topbar in the OSD window.
Custom_1109_TopBarOverlay.xml, not sure if it is used. No window will be modified.
Sorry, modify Custom_1109_TopBarOverlay.xml works on my QNAP. It’s strange, it doesn’t work on Windows.