added bluelight filter via redshift to i3 config

.config/i3/config

@@ -371,6 +371,7 @@ for_window [class="Yad"] floating enable
 exec         --no-startup-id udiskie -a -n -t                                                           # automounting USB sticks
 exec         --no-startup-id nm-applet                                                                  # network manager applet
 exec         --no-startup-id volumeicon                                                                 # applet for audio
+exec         --no-startup-id redshift-gtk                                                               # bluelight filter
 exec         --no-startup-id xfce4-power-manager                                                        # display power settings
 exec_always  --no-startup-id wal -R                                                                     # use wal colorschemes
 exec_always  --no-startup-id setxkbmap -rules evdev -model evdev -layout us -variant altgr-intl         # us-international kb layout

.config/redshift.conf

@@ -0,0 +1,58 @@
+; Global settings for redshift
+[redshift]
+; Set the day and night screen temperatures
+temp-day=5700
+temp-night=3500
+
+; Enable/Disable a smooth transition between day and night
+; 0 will cause a direct change from day to night screen temperature.
+; 1 will gradually increase or decrease the screen temperature.
+transition=1
+
+
+; Set the screen brightness. Default is 1.0.
+;brightness=0.9
+; It is also possible to use different settings for day and night
+; since version 1.8.
+;brightness-day=0.7
+;brightness-night=0.4
+; Set the screen gamma (for all colors, or each color channel
+; individually)
+gamma=0.8
+;gamma=0.8:0.7:0.8
+; This can also be set individually for day and night since
+; version 1.10.
+;gamma-day=0.8:0.7:0.8
+;gamma-night=0.6
+
+; Set the location-provider: 'geoclue', 'geoclue2', 'manual'
+; type 'redshift -l list' to see possible values.
+; The location provider settings are in a different section.
+location-provider=manual
+
+; Set the adjustment-method: 'randr', 'vidmode'
+; type 'redshift -m list' to see all possible values.
+; 'randr' is the preferred method, 'vidmode' is an older API.
+; but works in some cases when 'randr' does not.
+; The adjustment method settings are in a different section.
+adjustment-method=randr
+
+; Configuration of the location-provider:
+; type 'redshift -l PROVIDER:help' to see the settings.
+; ex: 'redshift -l manual:help'
+; Keep in mind that longitudes west of Greenwich (e.g. the Americas)
+; are negative numbers.
+[manual]
+lat=48.137154
+lon=11.576124
+
+; Configuration of the adjustment-method
+; type 'redshift -m METHOD:help' to see the settings.
+; ex: 'redshift -m randr:help'
+; In this example, randr is configured to adjust screen 1.
+; Note that the numbering starts from 0, so this is actually the
+; second screen. If this option is not specified, Redshift will try
+; to adjust _all_ screens.
+;[randr]
+;screen=1
+