diff --git a/eyestrainreminder/__main__.py b/eyestrainreminder/__main__.py
index 6ba0dbd..8e5b308 100755
--- a/eyestrainreminder/__main__.py
+++ b/eyestrainreminder/__main__.py
@@ -6,6 +6,7 @@ import os
 from pystray import MenuItem as item
 import pystray
 from PIL import Image
+import argparse
 
 NAME = 'Eye Strain Reminder'
 MESSAGE = 'Friendly reminder to observe the 20-20-20 rule'
@@ -18,28 +19,43 @@ DIR = os.path.dirname(os.path.abspath(__file__))
 icon = None
 mute = False
 disable_notifications = False
+invert_icons = False
 
 def init():
     global icon
-    image = Image.open(f"{DIR}/files/eye_light.png")
+    image = get_image()
     icon = pystray.Icon(NAME, image, NAME, generate_menu_items())
     icon.run()
     print("Initializing EyeStrainReminder...")
     notify2.init(NAME)
 
+def update_icon():
+    global icon
+    image = get_image()
+    icon.icon = image
+
+def get_image():
+    theme = [[f"{DIR}/files/eye_light.png", f"{DIR}/files/eye_dark.png"],
+            [f"{DIR}/files/eye_dark.png", f"{DIR}/files/eye_light.png"]]
+    return Image.open(theme[invert_icons][disable_notifications])
+
 def generate_menu_items():   
     menu_items = []
-    if not mute:
-        menu_items.append(item('Mute', toggle_mute))
-    else:
-        menu_items.append(item('Unmute', toggle_mute))
+    menu_items.append(item('Mute' if not mute else 'Unmute', toggle_mute))
+    menu_items.append(item('Do Not Disturb' if not disable_notifications else 'Enable Notifications', toggle_notifications))
     return menu_items
 
 def toggle_mute():
     global mute
-    mute = True if not mute else False
+    mute = not mute
     update_menu()
 
+def toggle_notifications():
+    global disable_notifications
+    disable_notifications = not disable_notifications
+    update_menu()
+    update_icon()
+
 def update_menu():
     global icon
     icon.menu = generate_menu_items()
@@ -62,7 +78,7 @@ def send_notification():
         notify(MESSAGE_MISSED)
 
 def notify(message):
-    print(MESSAGE)
+    print(message)
     notification = notify2.Notification(NAME, message, "notification-device-eject")
     notification.set_timeout(TIMEOUT * MILLISECOND)
     notification.set_urgency(notify2.URGENCY_LOW)