kwinscript that tries to mimic Compiz opacify under kwin
Any window that fully or partially cover the active window will automatically become transparent.
Post install steps (to work around a kwin script/plasmapkg2 issue)
mkdir -p ~/.local/share/kservices5
ln -s ~/.local/share/kwin/scripts/opacify-kwin/metadata.desktop ~/.local/share/kservices5/opacify-kwin.desktop
* requires xprop in path
* X11 only. Does not work under wayland
* top window will stay transparent if you click to raise a window lower on the stack