Tint the screen at night.

ansible/roles/waybar/files/waybar_config.json

@@ -1,7 +1,7 @@
 {
   // "height": 10, // Waybar height (to be removed for auto height)
   "modules-left": ["sway/workspaces", "sway/mode"],
-  "modules-right": ["custom/temperature", "custom/sound", "custom/available_memory", "custom/battery", "idle_inhibitor", "custom/clock", "tray"],
+  "modules-right": ["custom/night_mode", "custom/temperature", "custom/sound", "custom/available_memory", "custom/battery", "idle_inhibitor", "custom/clock", "tray"],
   "sway/workspaces": {
     "disable-scroll": true
   },
@@ -12,7 +12,7 @@
     "format": "{icon}",
     "format-icons": {
       "activated": "☕",//☕
-      "deactivated": "⏾"//☾☁⛾⛔⏾⌛⏳
+      "deactivated": "💤"//☾☁⛾⛔⏾⌛⏳💤
     }
   },
   "tray": {
@@ -43,5 +43,11 @@
     "exec": "waybar_custom_temperature",
     "return-type": "json",
     "restart-interval": 30
+  },
+  "custom/night_mode": {
+    "exec": "waybar_night_mode",
+    "return-type": "json",
+    "restart-interval": 30,
+    "on-click": "pkill --signal USR1 -f waybar_night_mode"
   }
 }