Make screen red (use xrandr, not redshift)

readme.md

make screen red using bash

This uses xrandr to manipulate the screen gamma.

Its like redshift... but without the telemetry...

I tweaked the gamma to look appropriate on my solarized dark Gtk themes.

It may not look usable on normal color schemes.

gamma-script.mildew.sh

#!/bin/bash

function redSetting {
	echo "Making screen mildew yellow-green"
	echo "Designed for screens using Dark Solarized-like color schemes"
	echo "Intended for Photo Development Dark Rooms"
	GAMMA=1:1:0.1
	bright=0.7
}

function normalSetting {
	echo "Making screen normal"
	GAMMA=1:1:1
	bright=1
}

function runXrANDr {
	for output in $(xrandr --prop | grep \ connected | cut -d\  -f1); do
		xrandr --output $output --gamma $GAMMA --brightness $bright
	done
}

if [[ "$@" = "on" ]]; then
	redSetting
	runXrANDr

elif [[ "$@" = "off" ]]; then
	normalSetting
	runXrANDr

elif [[ "$@" = "test" ]]; then
	redSetting
	runXrANDr

	sleep 5s

	normalSetting
	runXrANDr

else
	echo Requires one of: "on", "off", "test"
	exit 128

fi

gamma-script.negative.sh

#!/bin/bash

function redSetting {
	echo "Making screen negative"
	echo "Designed for screens using Dark Solarized-like color schemes"
	echo "Intended for Photo Development Dark Rooms"
	GAMMA=0:0:0
	bright=-1
}

function normalSetting {
	echo "Making screen normal"
	GAMMA=1:1:1
	bright=1
}

function runXrANDr {
	for output in $(xrandr --prop | grep \ connected | cut -d\  -f1); do
		xrandr --output $output --gamma $GAMMA --brightness $bright
	done
}

if [[ "$@" = "on" ]]; then
	redSetting
	runXrANDr

elif [[ "$@" = "off" ]]; then
	normalSetting
	runXrANDr

elif [[ "$@" = "test" ]]; then
	redSetting
	runXrANDr

	sleep 5s

	normalSetting
	runXrANDr

else
	echo Requires one of: "on", "off", "test"
	exit 128

fi

gamma-script.red.sh

#!/bin/bash

function redSetting {
	echo "Making screen red"
	echo "Designed for screens using Dark Solarized-like color schemes"
	echo "Intended for Photo Development Dark Rooms"
	GAMMA=0:0:0.8
	bright=-1
}

function normalSetting {
	echo "Making screen normal"
	GAMMA=1:1:1
	bright=1
}

function runXrANDr {
	for output in $(xrandr --prop | grep \ connected | cut -d\  -f1); do
		xrandr --output $output --gamma $GAMMA --brightness $bright
	done
}

if [[ "$@" = "on" ]]; then
	redSetting
	runXrANDr

elif [[ "$@" = "off" ]]; then
	normalSetting
	runXrANDr

elif [[ "$@" = "test" ]]; then
	redSetting
	runXrANDr

	sleep 5s

	normalSetting
	runXrANDr

else
	echo Requires one of: "on", "off", "test"
	exit 128

fi

gamma-script.sh

#!/bin/bash

if [[ "$@" = "on" ]]; then

  echo Making screen red
  GAMMA=4:1.5:1

elif [[ "$@" = "off" ]]; then

  echo Making screen normal
  GAMMA=1:1:1

else

  echo Requires one of: "on", "off"
  exit 128

fi

for output in $(xrandr --prop | grep \ connected | cut -d\  -f1); do

  xrandr --output $output --gamma $GAMMA

done