diff --git a/README.md b/README.md
index 722f656..89a6160 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # **OptimaLab35**
-_Last updated: 02 Feb 2025 (v.0.9.0)_
+_Last updated: 10 Feb 2025 (v.0.12.3)_
 
 ## **Overview**
 
@@ -38,9 +38,9 @@ For the most accurate and detailed update information, please refer to the [**CH
 - Automatically adjust EXIF timestamps based on image file names
 - Add GPS coordinates to images
 
-### **Updater**
+### **Settings**
+- Option to use `PyQtDarkTheme` and select Dark, Light, or auto theme
 - Checks for updates on PyPI, automatically downloads and installs the latest version
-- Restarts the program after update
 
 ---
 
@@ -53,32 +53,33 @@ pip install OptimaLab35
 
 ---
 
-## Preview GUI **0.9.0**
+## Preview GUI **0.12.2**
 **PREVIEW** might be out of date.
 
 **Main tab**
 
-![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/main_tab.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/mainwindow_light.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/mainwindow_dark.png){width=40%}
 
 **Exif tab**
 
-![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/exif_tab.png){width=40%}
-
-**Exif editor**
-
-![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/exif_editor.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/mainwindow_exif_light.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/mainwindow_exif_dark.png){width=40%}
 
 **Preview window**
 
-![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/preview_window.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/previewwindow_light.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/previewwindow_dark.png){width=40%}
 
-**About**
+**Settings**
 
-![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/about_window.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/settingswindow_light.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/settingswindow_dark.png){width=40%}
 
 **Updater**
 
-![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/updater_window.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/settingswindow_updater_light.png){width=40%}
+![main](https://gitlab.com/CodeByMrFinchum/OptimaLab35/-/raw/main/media/settingswindow_updater_dark.png){width=40%}
 
 ---
 
diff --git a/media/about_window.png b/media/about_window.png
deleted file mode 100644
index f97c061..0000000
Binary files a/media/about_window.png and /dev/null differ
diff --git a/media/exif_editor.png b/media/exif_editor.png
deleted file mode 100644
index 8457cb8..0000000
Binary files a/media/exif_editor.png and /dev/null differ
diff --git a/media/exif_tab.png b/media/exif_tab.png
deleted file mode 100644
index 7d62403..0000000
Binary files a/media/exif_tab.png and /dev/null differ
diff --git a/media/main_tab.png b/media/main_tab.png
deleted file mode 100644
index bf9d2f0..0000000
Binary files a/media/main_tab.png and /dev/null differ
diff --git a/media/mainwindow_dark.png b/media/mainwindow_dark.png
new file mode 100644
index 0000000..8ccda0d
Binary files /dev/null and b/media/mainwindow_dark.png differ
diff --git a/media/mainwindow_exif_dark.png b/media/mainwindow_exif_dark.png
new file mode 100644
index 0000000..f759fe2
Binary files /dev/null and b/media/mainwindow_exif_dark.png differ
diff --git a/media/mainwindow_exif_light.png b/media/mainwindow_exif_light.png
new file mode 100644
index 0000000..2b3f1ab
Binary files /dev/null and b/media/mainwindow_exif_light.png differ
diff --git a/media/mainwindow_light.png b/media/mainwindow_light.png
new file mode 100644
index 0000000..197874b
Binary files /dev/null and b/media/mainwindow_light.png differ
diff --git a/media/preview_window.png b/media/preview_window.png
deleted file mode 100644
index 5fcc363..0000000
Binary files a/media/preview_window.png and /dev/null differ
diff --git a/media/previewwindow_dark.png b/media/previewwindow_dark.png
new file mode 100644
index 0000000..ff4b610
Binary files /dev/null and b/media/previewwindow_dark.png differ
diff --git a/media/previewwindow_light.png b/media/previewwindow_light.png
new file mode 100644
index 0000000..a9d2da9
Binary files /dev/null and b/media/previewwindow_light.png differ
diff --git a/media/settingswindow_dark.png b/media/settingswindow_dark.png
new file mode 100644
index 0000000..9c791b8
Binary files /dev/null and b/media/settingswindow_dark.png differ
diff --git a/media/settingswindow_light.png b/media/settingswindow_light.png
new file mode 100644
index 0000000..67f5fb0
Binary files /dev/null and b/media/settingswindow_light.png differ
diff --git a/media/settingswindow_updater_dark.png b/media/settingswindow_updater_dark.png
new file mode 100644
index 0000000..fbe003c
Binary files /dev/null and b/media/settingswindow_updater_dark.png differ
diff --git a/media/settingswindow_updater_light.png b/media/settingswindow_updater_light.png
new file mode 100644
index 0000000..6a3e124
Binary files /dev/null and b/media/settingswindow_updater_light.png differ
diff --git a/media/updater_window.png b/media/updater_window.png
deleted file mode 100644
index 506a184..0000000
Binary files a/media/updater_window.png and /dev/null differ