Background images in OSMC skin are stored in /usr/share/kodi/addons/skin/osmc/extras/backgrounds.
And regarding removing menu items, it’s in Settings -> Interface -> Skin configuration -> Customise skin menu.
Background images in OSMC skin are stored in /usr/share/kodi/addons/skin/osmc/extras/backgrounds.
And regarding removing menu items, it’s in Settings -> Interface -> Skin configuration -> Customise skin menu.