diff --git a/controller.py b/controller.py
index fe0ccb6a..79fb88be 100644
--- a/controller.py
+++ b/controller.py
@@ -546,14 +546,17 @@ def callbackSetCtranslate2WeightType(value):
 
 def callbackSetDeeplAuthKey(value):
     print("callbackSetDeeplAuthKey", str(value))
+    view.clearNotificationMessage()
     if len(value) == 39:
         result = model.authenticationTranslatorDeepLAuthKey(auth_key=value)
         if result is True:
             key = value
             view.printToTextbox_AuthenticationSuccess()
+            view.showSuccessMessage_DeeplAuthKey()
         else:
             key = None
             view.printToTextbox_AuthenticationError()
+            view.showErrorMessage_DeeplAuthKey()
         auth_keys = config.AUTH_KEYS
         auth_keys["DeepL_API"] = key
         config.AUTH_KEYS = auth_keys
@@ -590,7 +593,7 @@ def callbackSetMicEnergyThreshold(value):
     try:
         value = int(value)
         if 0 <= value and value <= config.MAX_MIC_ENERGY_THRESHOLD:
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             config.INPUT_MIC_ENERGY_THRESHOLD = value
             view.setGuiVariable_MicEnergyThreshold(config.INPUT_MIC_ENERGY_THRESHOLD)
         else:
@@ -627,7 +630,7 @@ def callbackSetMicRecordTimeout(value):
     try:
         value = int(value)
         if 0 <= value and value <= config.INPUT_MIC_PHRASE_TIMEOUT:
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             config.INPUT_MIC_RECORD_TIMEOUT = value
             view.setGuiVariable_MicRecordTimeout(config.INPUT_MIC_RECORD_TIMEOUT)
         else:
@@ -642,7 +645,7 @@ def callbackSetMicPhraseTimeout(value):
     try:
         value = int(value)
         if 0 <= value and value >= config.INPUT_MIC_RECORD_TIMEOUT:
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             config.INPUT_MIC_PHRASE_TIMEOUT = value
             view.setGuiVariable_MicPhraseTimeout(config.INPUT_MIC_PHRASE_TIMEOUT)
         else:
@@ -657,7 +660,7 @@ def callbackSetMicMaxPhrases(value):
     try:
         value = int(value)
         if 0 <= value:
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             config.INPUT_MIC_MAX_PHRASES = value
             view.setGuiVariable_MicMaxPhrases(config.INPUT_MIC_MAX_PHRASES)
         else:
@@ -708,7 +711,7 @@ def callbackSetSpeakerEnergyThreshold(value):
     try:
         value = int(value)
         if 0 <= value and value <= config.MAX_SPEAKER_ENERGY_THRESHOLD:
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             config.INPUT_SPEAKER_ENERGY_THRESHOLD = value
             view.setGuiVariable_SpeakerEnergyThreshold(config.INPUT_SPEAKER_ENERGY_THRESHOLD)
         else:
@@ -750,7 +753,7 @@ def callbackSetSpeakerRecordTimeout(value):
     try:
         value = int(value)
         if 0 <= value and value <= config.INPUT_SPEAKER_PHRASE_TIMEOUT:
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             config.INPUT_SPEAKER_RECORD_TIMEOUT = value
             view.setGuiVariable_SpeakerRecordTimeout(config.INPUT_SPEAKER_RECORD_TIMEOUT)
         else:
@@ -765,7 +768,7 @@ def callbackSetSpeakerPhraseTimeout(value):
     try:
         value = int(value)
         if 0 <= value and value >= config.INPUT_SPEAKER_RECORD_TIMEOUT:
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             config.INPUT_SPEAKER_PHRASE_TIMEOUT = value
             view.setGuiVariable_SpeakerPhraseTimeout(config.INPUT_SPEAKER_PHRASE_TIMEOUT)
         else:
@@ -780,7 +783,7 @@ def callbackSetSpeakerMaxPhrases(value):
     try:
         value = int(value)
         if 0 <= value:
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             config.INPUT_SPEAKER_MAX_PHRASES = value
             view.setGuiVariable_SpeakerMaxPhrases(config.INPUT_SPEAKER_MAX_PHRASES)
         else:
@@ -854,7 +857,7 @@ def callbackSetSendMessageFormat(value):
     print("callbackSetSendMessageFormat", value)
     if isUniqueStrings(["[message]"], value) is True:
         config.SEND_MESSAGE_FORMAT = value
-        view.clearErrorMessage()
+        view.clearNotificationMessage()
         view.setSendMessageFormat_EntryWidgets(config.SEND_MESSAGE_FORMAT)
     else:
         view.showErrorMessage_SendMessageFormat()
@@ -865,7 +868,7 @@ def callbackSetSendMessageFormatWithT(value):
     if len(value) > 0:
         if isUniqueStrings(["[message]", "[translation]"], value) is True:
             config.SEND_MESSAGE_FORMAT_WITH_T = value
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             view.setSendMessageFormatWithT_EntryWidgets(config.SEND_MESSAGE_FORMAT_WITH_T)
         else:
             view.showErrorMessage_SendMessageFormatWithT()
@@ -876,7 +879,7 @@ def callbackSetReceivedMessageFormat(value):
     print("callbackSetReceivedMessageFormat", value)
     if isUniqueStrings(["[message]"], value) is True:
         config.RECEIVED_MESSAGE_FORMAT = value
-        view.clearErrorMessage()
+        view.clearNotificationMessage()
         view.setReceivedMessageFormat_EntryWidgets(config.RECEIVED_MESSAGE_FORMAT)
     else:
         view.showErrorMessage_ReceivedMessageFormat()
@@ -887,7 +890,7 @@ def callbackSetReceivedMessageFormatWithT(value):
     if len(value) > 0:
         if isUniqueStrings(["[message]", "[translation]"], value) is True:
             config.RECEIVED_MESSAGE_FORMAT_WITH_T = value
-            view.clearErrorMessage()
+            view.clearNotificationMessage()
             view.setReceivedMessageFormatWithT_EntryWidgets(config.RECEIVED_MESSAGE_FORMAT_WITH_T)
         else:
             view.showErrorMessage_ReceivedMessageFormatWithT()
diff --git a/locales/en.yml b/locales/en.yml
index c885795f..500a00f3 100644
--- a/locales/en.yml
+++ b/locales/en.yml
@@ -130,6 +130,8 @@ config_window:
     label: DeepL Auth Key
     desc: Please select %{translator} on the main screen with DeepL_API when using. ※Some languages may not be supported.
     open_auth_key_webpage: Open DeepL Account Webpage
+    auth_key_success: Auth key update completed.
+    auth_key_error: Auth Key is incorrect or Usage limit reached.
 
   mic_host:
     label: Mic Host/Driver
diff --git a/locales/ja.yml b/locales/ja.yml
index d7d800e1..e9a4492c 100644
--- a/locales/ja.yml
+++ b/locales/ja.yml
@@ -28,7 +28,7 @@ main_window:
     disabled_foreground: 最前面への固定を解除しました。
 
     auth_key_success: 認証キーの更新が完了しました。
-    auth_key_error: 認証キーが間違っているか、API使用制限が上限に達しています.
+    auth_key_error: 認証キーが間違っているか、API使用制限が上限に達しています。
 
     no_mic_device_detected_error: マイクデバイスが検出されませんでした。
     no_speaker_device_detected_error: スピーカーデバイスが検出されませんでした。
@@ -129,6 +129,8 @@ config_window:
     label: DeepL 認証キー
     desc: "使用の際は、メイン画面にある %{translator} をDeepL_APIに変更してください。\n※対応していない言語もあります。"
     open_auth_key_webpage: DeepLアカウントページを開く
+    auth_key_success: 認証キーの更新が完了しました。
+    auth_key_error: 認証キーが間違っているか、API使用制限が上限に達しています。
 
   mic_host:
     label: マイク（ホスト/ドライバー）
diff --git a/view.py b/view.py
index 39ac795f..840a2774 100644
--- a/view.py
+++ b/view.py
@@ -80,8 +80,8 @@ class View():
             **common_args
         )
 
-        self.settings.error_message_window = SimpleNamespace(
-            uism=all_uism.error_message_window,
+        self.settings.notification_message_window = SimpleNamespace(
+            uism=all_uism.notification_message_window,
             **common_args
         )
 
@@ -297,6 +297,8 @@ class View():
             CALLBACK_SET_DEEPL_AUTH_KEY=None,
             VAR_DEEPL_AUTH_KEY=StringVar(value=config.AUTH_KEYS["DeepL_API"]),
             VAR_OPEN_DEEPL_WEB_PAGE=StringVar(value=i18n.t( "config_window.deepl_auth_key.open_auth_key_webpage")),
+            CALLBACK_FOCUS_OUT_DEEPL_AUTH_KEY=self.callbackBindFocusOut_DeeplAuthKey,
+
 
 
             # Transcription Tab (Mic)
@@ -997,8 +999,8 @@ class View():
     def _clearTextBox(entry_widget):
         entry_widget.delete("1.0", "end")
 
-    def clearErrorMessage(self):
-        vrct_gui._clearErrorMessage()
+    def clearNotificationMessage(self):
+        vrct_gui._clearNotificationMessage()
 
 
     @staticmethod
@@ -1731,60 +1733,74 @@ class View():
 
 
 # Callback Bind FocusOut
+    def callbackBindFocusOut_DeeplAuthKey(self, _e=None):
+        self.clearNotificationMessage()
+
     def callbackBindFocusOut_MicEnergyThreshold(self, _e=None):
         self.setLatestConfigVariable("MicEnergyThreshold")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
     def callbackBindFocusOut_SpeakerEnergyThreshold(self, _e=None):
         self.setLatestConfigVariable("SpeakerEnergyThreshold")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
 
     def callbackBindFocusOut_MicRecordTimeout(self, _e=None):
         self.setLatestConfigVariable("MicRecordTimeout")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
     def callbackBindFocusOut_MicPhraseTimeout(self, _e=None):
         self.setLatestConfigVariable("MicPhraseTimeout")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
     def callbackBindFocusOut_MicMaxPhrases(self, _e=None):
         self.setLatestConfigVariable("MicMaxPhrases")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
 
     def callbackBindFocusOut_SpeakerRecordTimeout(self, _e=None):
         self.setLatestConfigVariable("SpeakerRecordTimeout")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
     def callbackBindFocusOut_SpeakerPhraseTimeout(self, _e=None):
         self.setLatestConfigVariable("SpeakerPhraseTimeout")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
     def callbackBindFocusOut_SpeakerMaxPhrases(self, _e=None):
         self.setLatestConfigVariable("SpeakerMaxPhrases")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
 
     def callbackBindFocusOut_SendMessageFormat(self, _e=None):
         self.setLatestConfigVariable("SendMessageFormat")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
     def callbackBindFocusOut_SendMessageFormatWithT(self, _e=None):
         self.setLatestConfigVariable("SendMessageFormatWithT")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
     def callbackBindFocusOut_ReceivedMessageFormat(self, _e=None):
         self.setLatestConfigVariable("ReceivedMessageFormat")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
     def callbackBindFocusOut_ReceivedMessageFormatWithT(self, _e=None):
         self.setLatestConfigVariable("ReceivedMessageFormatWithT")
-        self.clearErrorMessage()
+        self.clearNotificationMessage()
 
 
 
-# Show Error Message (Config Window)
+# Show Notification Message (Config Window)
+    def showSuccessMessage_DeeplAuthKey(self):
+        self._showSuccessMessage(
+            vrct_gui.config_window.sb__entry_deepl_auth_key,
+            i18n.t("config_window.deepl_auth_key.auth_key_success")
+        )
+    def showErrorMessage_DeeplAuthKey(self):
+        self._showErrorMessage(
+            vrct_gui.config_window.sb__entry_deepl_auth_key,
+            i18n.t("config_window.deepl_auth_key.auth_key_error")
+        )
+
     def showErrorMessage_MicEnergyThreshold(self):
         self._showErrorMessage(
             vrct_gui.config_window.sb__progressbar_x_slider__entry_mic_energy_threshold,
@@ -1891,6 +1907,10 @@ class View():
     def _makeInvalidValueErrorMessage(error_message):
         return i18n.t("config_window.common_error_message.invalid_value") + "\n" + error_message
 
+    def _showSuccessMessage(self, target_widget, message):
+        self.view_variable.VAR_ERROR_MESSAGE.set(message)
+        vrct_gui._showSuccessMessage(target_widget=target_widget)
+
     def _showErrorMessage(self, target_widget, message):
         self.view_variable.VAR_ERROR_MESSAGE.set(message)
         vrct_gui._showErrorMessage(target_widget=target_widget)
diff --git a/vrct_gui/_CreateErrorWindow.py b/vrct_gui/_CreateNotificationWindow.py
similarity index 67%
rename from vrct_gui/_CreateErrorWindow.py
rename to vrct_gui/_CreateNotificationWindow.py
index ef7ff5fb..e7fa2226 100644
--- a/vrct_gui/_CreateErrorWindow.py
+++ b/vrct_gui/_CreateNotificationWindow.py
@@ -5,7 +5,7 @@ from .ui_utils import getLatestWidth, getLatestHeight
 from utils import isEven
 
 
-class _CreateErrorWindow(CTkToplevel):
+class _CreateNotificationWindow(CTkToplevel):
     def __init__(
             self,
             settings,
@@ -16,7 +16,8 @@ class _CreateErrorWindow(CTkToplevel):
             message_ipady,
             message_font_size,
 
-            message_bg_color,
+            error_message_bg_color,
+            success_message_bg_color,
             message_text_color,
         ):
 
@@ -34,7 +35,8 @@ class _CreateErrorWindow(CTkToplevel):
         self.message_ipady = message_ipady
         self.message_font_size = message_font_size
 
-        self.message_bg_color = message_bg_color
+        self.error_message_bg_color = error_message_bg_color
+        self.success_message_bg_color = success_message_bg_color
         self.message_text_color = message_text_color
 
 
@@ -51,20 +53,16 @@ class _CreateErrorWindow(CTkToplevel):
         self.wm_attributes("-alpha", 0)
         self.wm_attributes("-toolwindow", True)
 
-        self.configure(fg_color=self.message_bg_color)
-
-
-
 
         self.grid_rowconfigure(0,weight=1)
         self.grid_columnconfigure(0,weight=1)
 
-        self.error_message_container = CTkFrame(self, corner_radius=0, fg_color=self.message_bg_color, width=0, height=0)
-        self.error_message_container.grid(row=0, column=0, sticky="nsew")
+        self.notification_message_container = CTkFrame(self, corner_radius=0, width=0, height=0)
+        self.notification_message_container.grid(row=0, column=0, sticky="nsew")
 
 
-        self.error_message_container_label_wrapper = CTkLabel(
-            self.error_message_container,
+        self.notification_message_container_label_wrapper = CTkLabel(
+            self.notification_message_container,
             # text=message,
             textvariable=self._view_variable.VAR_ERROR_MESSAGE,
             height=0,
@@ -74,12 +72,19 @@ class _CreateErrorWindow(CTkToplevel):
             justify="left",
             text_color=self.message_text_color,
         )
-        self.error_message_container_label_wrapper.grid(row=0, column=0, padx=self.message_ipadx, pady=self.message_ipady, sticky="nsew")
+        self.notification_message_container_label_wrapper.grid(row=0, column=0, padx=self.message_ipadx, pady=self.message_ipady, sticky="nsew")
 
 
 
 
-    def show(self, target_widget):
+    def show(self, target_widget, message_type):
+        if message_type == "Error":
+            self.notification_message_container.configure(fg_color=self.error_message_bg_color)
+        elif message_type == "Success":
+            self.notification_message_container.configure(fg_color=self.success_message_bg_color)
+        else:
+            raise ValueError("message_type is not selected")
+
         if self.hide is False:
             return
 
@@ -92,22 +97,23 @@ class _CreateErrorWindow(CTkToplevel):
 
         self.hide = False
 
-        label_width = getLatestWidth(self.error_message_container_label_wrapper)
-        label_height = getLatestHeight(self.error_message_container_label_wrapper)
+        label_width = getLatestWidth(self.notification_message_container_label_wrapper)
+        label_height = getLatestHeight(self.notification_message_container_label_wrapper)
 
         # for fixing 1px bug
         if isEven(label_width) is False:
-            self.error_message_container_label_wrapper.grid(padx=(self.message_ipadx[0], self.message_ipadx[1]-1))
+            self.notification_message_container_label_wrapper.grid(padx=(self.message_ipadx[0], self.message_ipadx[1]-1))
         else:
-            self.error_message_container_label_wrapper.grid(padx=self.message_ipadx)
+            self.notification_message_container_label_wrapper.grid(padx=self.message_ipadx)
 
         # for fixing 1px bug
         if isEven(label_height) is False:
-            self.error_message_container_label_wrapper.grid(pady=(self.message_ipady[0], self.message_ipady[1]-1))
+            self.notification_message_container_label_wrapper.grid(pady=(self.message_ipady[0], self.message_ipady[1]-1))
         else:
-            self.error_message_container_label_wrapper.grid(pady=self.message_ipady)
+            self.notification_message_container_label_wrapper.grid(pady=self.message_ipady)
 
 
+        # First show animation
         for i in range(0,101,20):
             if not self.winfo_exists():
                 break
@@ -117,12 +123,14 @@ class _CreateErrorWindow(CTkToplevel):
 
         sleep(0.1)
 
-        for i in range(0,91,10):
-            if not self.winfo_exists():
-                break
-            self.attributes("-alpha", i/100)
-            self.update()
-            sleep(1/80)
+        # Blink animation
+        if message_type == "Error":
+            for i in range(0,91,10):
+                if not self.winfo_exists():
+                    break
+                self.attributes("-alpha", i/100)
+                self.update()
+                sleep(1/80)
 
 
     def _withdraw(self, e=None):
diff --git a/vrct_gui/config_window/widgets/createSideMenuAndSettingsBoxContainers/setting_box_containers/setting_box_translation/createSettingBox_Translation.py b/vrct_gui/config_window/widgets/createSideMenuAndSettingsBoxContainers/setting_box_containers/setting_box_translation/createSettingBox_Translation.py
index 7e3a9ba5..3350b4d8 100644
--- a/vrct_gui/config_window/widgets/createSideMenuAndSettingsBoxContainers/setting_box_containers/setting_box_translation/createSettingBox_Translation.py
+++ b/vrct_gui/config_window/widgets/createSideMenuAndSettingsBoxContainers/setting_box_containers/setting_box_translation/createSettingBox_Translation.py
@@ -47,6 +47,7 @@ def createSettingBox_Translation(setting_box_wrapper, config_window, settings, v
         entry_attr_name="sb__entry_deepl_auth_key",
         entry_width=settings.uism.RESPONSIVE_UI_SIZE_INT_300,
         entry_bind__Any_KeyRelease=lambda value: deeplAuthKeyCallback(value),
+        entry_bind__FocusOut=view_variable.CALLBACK_FOCUS_OUT_DEEPL_AUTH_KEY,
         entry_textvariable=view_variable.VAR_DEEPL_AUTH_KEY,
         open_authkey_page_command=lambda _e: callFunctionIfCallable(view_variable.CALLBACK_OPEN_WEBPAGE_DEEPL_AUTH_KEY),
         open_authkey_text_variable=view_variable.VAR_OPEN_DEEPL_WEB_PAGE,
diff --git a/vrct_gui/ui_managers/Themes/_darkTheme.py b/vrct_gui/ui_managers/Themes/_darkTheme.py
index 1b5fc339..71cbc292 100644
--- a/vrct_gui/ui_managers/Themes/_darkTheme.py
+++ b/vrct_gui/ui_managers/Themes/_darkTheme.py
@@ -294,6 +294,7 @@ def _darkTheme(base_color):
             # Error Message Window for Config Window
             # The color code [#bb4448] is a mixture of [#a9555c] and [#cc3333] (for a redder shade).
             SB__ERROR_MESSAGE_BG_COLOR = "#bb4448",
+            SB__SUCCESS_MESSAGE_BG_COLOR = "#368777",
             SB__ERROR_MESSAGE_TEXT_COLOR = "#fff",
         ),
 
diff --git a/vrct_gui/ui_managers/Themes/_lightTheme.py b/vrct_gui/ui_managers/Themes/_lightTheme.py
index d953372c..fbaf1201 100644
--- a/vrct_gui/ui_managers/Themes/_lightTheme.py
+++ b/vrct_gui/ui_managers/Themes/_lightTheme.py
@@ -288,6 +288,7 @@ def _lightTheme(base_color):
             # Error Message Window for Config Window
             # Check DarkTheme's this part. Based on the color bb4448, used to source, and pick up the number 600 by the generator (https://m2.material.io/design/color/the-color-system.html#tools-for-picking-colors)
             SB__ERROR_MESSAGE_BG_COLOR = "#cd4c4f",
+            SB__SUCCESS_MESSAGE_BG_COLOR = "#cd4c4f",
             SB__ERROR_MESSAGE_TEXT_COLOR = "#fff",
         ),
 
diff --git a/vrct_gui/ui_managers/UiScalingManager.py b/vrct_gui/ui_managers/UiScalingManager.py
index 85204af7..798f3412 100644
--- a/vrct_gui/ui_managers/UiScalingManager.py
+++ b/vrct_gui/ui_managers/UiScalingManager.py
@@ -11,7 +11,7 @@ class UiScalingManager():
         self.config_window = SimpleNamespace()
         self.selectable_language_window = SimpleNamespace()
         self.main_window_cover = SimpleNamespace()
-        self.error_message_window = SimpleNamespace()
+        self.notification_message_window = SimpleNamespace()
         self.confirmation_modal = SimpleNamespace()
         self.dropdown_menu_window = SimpleNamespace()
 
diff --git a/vrct_gui/vrct_gui.py b/vrct_gui/vrct_gui.py
index 25369a6a..0a795436 100644
--- a/vrct_gui/vrct_gui.py
+++ b/vrct_gui/vrct_gui.py
@@ -3,7 +3,7 @@ from customtkinter import CTk, CTkImage
 from  ._CreateSelectableLanguagesWindow import _CreateSelectableLanguagesWindow
 
 from ._CreateWindowCover import _CreateWindowCover
-from ._CreateErrorWindow import _CreateErrorWindow
+from ._CreateNotificationWindow import _CreateNotificationWindow
 from ._CreateDropdownMenuWindow import _CreateDropdownMenuWindow
 from ._changeMainWindowWidgetsStatus import _changeMainWindowWidgetsStatus
 from ._changeConfigWindowWidgetsStatus import _changeConfigWindowWidgetsStatus
@@ -140,8 +140,8 @@ class VRCT_GUI(CTk):
             view_variable=self._view_variable
         )
 
-        self.error_message_window = _CreateErrorWindow(
-            settings=self.settings.error_message_window,
+        self.notification_message_window = _CreateNotificationWindow(
+            settings=self.settings.notification_message_window,
             view_variable=self._view_variable,
             wrapper_widget=self.config_window.main_bg_container,
 
@@ -149,7 +149,8 @@ class VRCT_GUI(CTk):
             message_ipady=self.settings.config_window.uism.SB__ERROR_MESSAGE_IPADY,
             message_font_size=self.settings.config_window.uism.SB__ERROR_MESSAGE_FONT_SIZE,
 
-            message_bg_color=self.settings.config_window.ctm.SB__ERROR_MESSAGE_BG_COLOR,
+            error_message_bg_color=self.settings.config_window.ctm.SB__ERROR_MESSAGE_BG_COLOR,
+            success_message_bg_color=self.settings.config_window.ctm.SB__SUCCESS_MESSAGE_BG_COLOR,
             message_text_color=self.settings.config_window.ctm.SB__ERROR_MESSAGE_TEXT_COLOR,
         )
 
@@ -298,11 +299,14 @@ class VRCT_GUI(CTk):
 
 
     def _showErrorMessage(self, target_widget):
-        self.error_message_window.show(target_widget=target_widget)
+        self.notification_message_window.show(target_widget=target_widget, message_type="Error")
 
-    def _clearErrorMessage(self):
+    def _showSuccessMessage(self, target_widget):
+        self.notification_message_window.show(target_widget=target_widget, message_type="Success")
+
+    def _clearNotificationMessage(self):
         try:
-            self.error_message_window._withdraw()
+            self.notification_message_window._withdraw()
         except Exception:
             pass