diff --git a/customtkinter/__init__.py b/customtkinter/__init__.py
index 32624b9..141741b 100644
--- a/customtkinter/__init__.py
+++ b/customtkinter/__init__.py
@@ -22,7 +22,7 @@ def enable_macos_darkmode():
             sys.stderr.write("WARNING (customtkinter.enable_macos_darkmode): " +
                              "This command forces macOS dark-mode on all programs." +
                              "This can cause bugs on some other programs.\n" +
-                             "Disable it by calling customtkinter.disable_macos_darkmode at the end of the program.\n")
+                             "Disable it by calling customtkinter.disable_macos_darkmode() at the end of the program.\n")
         else:
             sys.stderr.write("WARNING (customtkinter.enable_macos_darkmode): " +
                              "Currently this works only with anaconda python version (Tcl/Tk >= 8.6.9).\n" +
@@ -58,7 +58,7 @@ def deactivate_threading():
     AppearanceModeTracker.init_listener_function(no_thread=True)
     sys.stderr.write("WARNING (customtkinter.deactivate_threading): Automatic threaded search for a change of the " +
                      "system appearance mode is deativated now.\nYou have to update the appearance mode manually " +
-                     "in your mainloop by calling customtkinter.update_theme() every time.\n")
+                     "in your mainloop by calling customtkinter.update_appearance_mode() every time.\n")
 
 
 def activate_threading():
diff --git a/customtkinter/appearance_mode_tracker.py b/customtkinter/appearance_mode_tracker.py
index d10af1f..8dc2a69 100644
--- a/customtkinter/appearance_mode_tracker.py
+++ b/customtkinter/appearance_mode_tracker.py
@@ -1,8 +1,13 @@
 from threading import Thread
 from time import sleep
-import darkdetect
 import sys
 
+if sys.platform == "darwin":
+    try:
+        import darkdetect
+    except ImportError as e:
+        sys.stderr.write(e + "\nYou have to install darkdetect: pip install darkdetect")
+
 
 class SystemAppearanceModeListener(Thread):
     """ This class checks for a system appearance change
diff --git a/customtkinter/customtkinter_color_manager.py b/customtkinter/customtkinter_color_manager.py
index 05518d9..a631d73 100644
--- a/customtkinter/customtkinter_color_manager.py
+++ b/customtkinter/customtkinter_color_manager.py
@@ -16,8 +16,6 @@ class CTkColorManager:
         cls.MAIN = (hex_color, hex_color)
         cls.MAIN_HOVER = (hex_color_hover, hex_color_hover)
 
-        print(CTkColorManager.MAIN, id(CTkColorManager))
-
     @classmethod
     def set_theme(cls, main_color):
         if main_color.lower() == "green":