diff --git a/lib/main.dart b/lib/main.dart
index 95de0cf..f401002 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -3,6 +3,7 @@ import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:flutter_zustand/flutter_zustand.dart';
 import 'package:iris/info.dart';
 import 'package:iris/pages/home_page.dart';
+import 'package:iris/store/use_app_store.dart';
 import 'package:iris/utils/is_desktop.dart';
 import 'package:media_kit/media_kit.dart';
 import 'package:window_manager/window_manager.dart';
@@ -37,6 +38,18 @@ class MyApp extends HookWidget {
 
   @override
   Widget build(BuildContext context) {
+    String theme = useAppStore().select(context, (state) => state.theme);
+
+    ThemeMode themeMode = useMemoized(
+        () =>
+            {
+              'auto': ThemeMode.system,
+              'light': ThemeMode.light,
+              'dark': ThemeMode.dark,
+            }[theme] ??
+            ThemeMode.system,
+        [theme]);
+
     return MaterialApp(
       title: INFO.title,
       theme: ThemeData(
@@ -44,7 +57,7 @@ class MyApp extends HookWidget {
         useMaterial3: true,
       ),
       darkTheme: ThemeData.dark(),
-      themeMode: ThemeMode.system,
+      themeMode: themeMode,
       home: const HomePage(),
     );
   }
diff --git a/lib/pages/settings/general.dart b/lib/pages/settings/general.dart
new file mode 100644
index 0000000..609982c
--- /dev/null
+++ b/lib/pages/settings/general.dart
@@ -0,0 +1,27 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+import 'package:flutter_zustand/flutter_zustand.dart';
+import 'package:iris/store/use_app_store.dart';
+import 'package:iris/widgets/show_theme_color_dialog.dart';
+
+class General extends HookWidget {
+  const General({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = useAppStore().select(context, (state) => state.theme);
+
+    return Column(children: [
+      ListTile(
+        leading: Icon(theme == 'light'
+            ? Icons.light_mode_rounded
+            : theme == 'dark'
+                ? Icons.dark_mode_rounded
+                : Icons.contrast_rounded),
+        title: const Text('Theme color'),
+        subtitle: Text(theme),
+        onTap: () => showThemeColorDialog(context),
+      ),
+    ]);
+  }
+}
diff --git a/lib/pages/settings/settings.dart b/lib/pages/settings/settings.dart
index df27ccb..5ee6793 100644
--- a/lib/pages/settings/settings.dart
+++ b/lib/pages/settings/settings.dart
@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:iris/pages/settings/about.dart';
+import 'package:iris/pages/settings/general.dart';
 import 'package:iris/pages/settings/libraries.dart';
 
 class Settings extends HookWidget {
@@ -18,7 +19,9 @@ class Settings extends HookWidget {
           child: TabBarView(
             controller: tabController,
             children: const [
-              Center(child: Text('General')),
+              SingleChildScrollView(
+                child: General(),
+              ),
               SingleChildScrollView(
                 child: About(),
               ),
diff --git a/lib/store/use_app_store.dart b/lib/store/use_app_store.dart
index 3c0efab..977ac83 100644
--- a/lib/store/use_app_store.dart
+++ b/lib/store/use_app_store.dart
@@ -18,6 +18,11 @@ class AppStore extends PersistentStore<AppState> {
   Future<void> toggleFullScreen() async =>
       set(state.copyWith(isFullScreen: !state.isFullScreen));
 
+  Future<void> updateTheme(String theme) async {
+    set(state.copyWith(theme: theme));
+    save(state);
+  }
+
   @override
   Future<AppState?> load() async {
     try {
diff --git a/lib/widgets/show_theme_color_dialog.dart b/lib/widgets/show_theme_color_dialog.dart
new file mode 100644
index 0000000..a6349e8
--- /dev/null
+++ b/lib/widgets/show_theme_color_dialog.dart
@@ -0,0 +1,78 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+import 'package:flutter_zustand/flutter_zustand.dart';
+import 'package:iris/store/use_app_store.dart';
+
+Future<void> showThemeColorDialog(BuildContext context) async =>
+    await showDialog<void>(
+      context: context,
+      builder: (context) => const ThemeColorDialog(),
+    );
+
+class ThemeColorDialog extends HookWidget {
+  const ThemeColorDialog({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = useAppStore().select(context, (state) => state.theme);
+    return AlertDialog(
+      title: const Text('Theme color'),
+      content: SingleChildScrollView(
+          child: Column(
+        children: [
+          ListTile(
+            title: const Text('Auto'),
+            leading: Radio(
+              value: 'auto',
+              groupValue: theme,
+              onChanged: (_) {
+                useAppStore().updateTheme('auto');
+                Navigator.pop(context);
+              },
+            ),
+            onTap: () {
+              useAppStore().updateTheme('auto');
+              Navigator.pop(context);
+            },
+          ),
+          ListTile(
+            title: const Text('Light'),
+            leading: Radio(
+              value: 'light',
+              groupValue: theme,
+              onChanged: (_) {
+                useAppStore().updateTheme('light');
+                Navigator.pop(context);
+              },
+            ),
+            onTap: () {
+              useAppStore().updateTheme('light');
+              Navigator.pop(context);
+            },
+          ),
+          ListTile(
+            title: const Text('Dark'),
+            leading: Radio(
+              value: 'dark',
+              groupValue: theme,
+              onChanged: (_) {
+                useAppStore().updateTheme('dark');
+                Navigator.pop(context);
+              },
+            ),
+            onTap: () {
+              useAppStore().updateTheme('dark');
+              Navigator.pop(context);
+            },
+          ),
+        ],
+      )),
+      actions: <Widget>[
+        TextButton(
+          onPressed: () => Navigator.pop(context, 'Cancel'),
+          child: const Text('Cancel'),
+        ),
+      ],
+    );
+  }
+}
diff --git a/lib/widgets/storage_dialog/show_local_alert_dialog.dart b/lib/widgets/storage_dialog/show_local_alert_dialog.dart
index b1ba559..067662b 100644
--- a/lib/widgets/storage_dialog/show_local_alert_dialog.dart
+++ b/lib/widgets/storage_dialog/show_local_alert_dialog.dart
@@ -4,14 +4,11 @@ import 'package:iris/models/storages/local_storage.dart';
 import 'package:iris/store/use_storage_store.dart';
 
 Future<void> showLocalAlertDialog(BuildContext context,
-    {LocalStorage? localStorage}) async {
-  await showDialog<void>(
-    context: context,
-    builder: (BuildContext context) {
-      return LocalDialog(localStorage: localStorage);
-    },
-  );
-}
+        {LocalStorage? localStorage}) async =>
+    await showDialog<void>(
+        context: context,
+        builder: (BuildContext context) =>
+            LocalDialog(localStorage: localStorage));
 
 class LocalDialog extends HookWidget {
   const LocalDialog({super.key, this.localStorage});
diff --git a/lib/widgets/storage_dialog/show_webdav_alert_dialog.dart b/lib/widgets/storage_dialog/show_webdav_alert_dialog.dart
index e71edb6..695364c 100644
--- a/lib/widgets/storage_dialog/show_webdav_alert_dialog.dart
+++ b/lib/widgets/storage_dialog/show_webdav_alert_dialog.dart
@@ -4,14 +4,13 @@ import 'package:iris/models/storages/webdav_storage.dart';
 import 'package:iris/store/use_storage_store.dart';
 
 Future<void> showWebDAVAlertDialog(BuildContext context,
-    {WebdavStorage? webdavStorage}) async {
-  await showDialog<void>(
-    context: context,
-    builder: (BuildContext context) {
-      return WebDAVDialog(webdavStorage: webdavStorage);
-    },
-  );
-}
+        {WebdavStorage? webdavStorage}) async =>
+    await showDialog<void>(
+      context: context,
+      builder: (BuildContext context) {
+        return WebDAVDialog(webdavStorage: webdavStorage);
+      },
+    );
 
 class WebDAVDialog extends HookWidget {
   const WebDAVDialog({super.key, this.webdavStorage});