/usr/share/lxqt/themes/kde-plasma/wallpaper.cfg is in lxqt-themes 0.12.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | /* Wallpaper by Nuno from the KDE Visual Design Group */
wallpapers/size=9
wallpapers/1/file=kde-plasma.png
|