I want my screen to flash red so that it looks similar to getting hit by a rocket in Doom II, preferably using cli tools. I've seen that redshift does something similar just way too slow so I tried using xrandr but couldn't figure out how to do what I want properly. Can xrandr (cli) do this and if so, how?
Also I'm using compiz. Maybe there is a way to do it with compiz using dbus-send?