Add redshift configuration.

home/dotfiles/config/redshift.conf

@@ -0,0 +1,19 @@
+; See https://wiki.archlinux.org/index.php/redshift#Configuration.
+;
+; To make redshift autostart on boot, run `redshift-gtk` manually
+; once, click on the icon, and choose "autostart". The autostart file
+; appears in `~/.config/autostart/redshift-gtk.desktop`.
+
+; Global settings for redshift
+[redshift]
+; Set the day and night screen temperatures (Neutral is 6500K)
+temp-day=6500
+temp-night=2000
+
+; Provide the lat/lon myself.
+location-provider=manual
+
+; The location provider config.
+[manual]
+lat=48.4912
+lon=9.2046