invert application's window colors

For example Zoom doens't have a dark theme!

• color inversion of a single window
• search linux compton invert colors of window
• https://askubuntu.com/questions/134668/how-to-trigger-a-color-inversion-effect-for-one-window
• https://github.com/chjj/compton/blob/master/dbus-examples/inverter.sh

setup

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wget -O ~/bin/compton-inverter.sh \
  https://github.com/chjj/compton/blob/master/dbus-examples/inverter.sh
chmod 755 ~/bin/compton-inverter.sh

• window manager tweaks > compositor > disable display compositing
• keyborad > shortcuts: /home/cloud/bin/compton-inverter.sh focused => Super+I
• session & startup > application autostart > compton-dbus /usr/bin/compton --dbus Run compton compositing manager

manual toggle

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xprop | grep WM_CLASS  # and click on the desired window
# WM_CLASS(STRING) = "leafpad", "Leafpad"

pkill compton
compton --invert-color-include '(class_g="Leafpad" && class_i="leafpad")'

dbus toggle

1. Make a keyboard shortcut for the official script:
   • use inverter.sh focused to target current active window
   • use inverter.sh to select by mouse click
2. run compton --dbus
3. press the shortcut to apply it