monitor preto e branco/ monitor grayscale i3wm / remove saturation /

xrandr --output eDP-1 --set CTM '1431655765,0,1431655765,0,1431655765,0,1431655765,0,1431655765,0,1431655765,0,1431655765,0,1431655765,0,1431655765,0'

voltar ao normal

xrandr --output eDP-1 --set CTM '0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1'