diff --git a/src-tauri/lang/en.json b/src-tauri/lang/en.json
index 4696d01..04ae9da 100644
--- a/src-tauri/lang/en.json
+++ b/src-tauri/lang/en.json
@@ -16,8 +16,9 @@
     "grasscutter_jar": "Set Grasscutter JAR",
     "java_path": "Set Custom Java Path",
     "grasscutter_with_game": "Automatically launch Grasscutter with game",
-    "language": "Select Language (requires restart)",
-    "background": "Set Custom Background (link or image file)"
+    "language": "Select Language",
+    "background": "Set Custom Background (link or image file)",
+    "theme": "Set Theme"
   },
   "downloads": {
     "grasscutter_stable_data": "Download Grasscutter Stable Data",
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index 3576fa7..0f1aae1 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -50,6 +50,7 @@ fn main() {
       system_helpers::run_jar,
       system_helpers::open_in_browser,
       system_helpers::copy_file,
+      system_helpers::install_location,
       proxy::set_proxy_addr,
       proxy::generate_ca_files,
       unzip::unzip,
@@ -145,8 +146,8 @@ async fn req_get(url: String) -> String {
 }
 
 #[tauri::command]
-async fn get_theme_list() -> Vec<HashMap<String, String>> {
-  let theme_loc = format!("{}/themes", system_helpers::install_location());
+async fn get_theme_list(dataDir: String) -> Vec<HashMap<String, String>> {
+  let theme_loc = format!("{}/themes", dataDir);
 
   // Ensure folder exists
   if !std::path::Path::new(&theme_loc).exists() {
diff --git a/src-tauri/src/system_helpers.rs b/src-tauri/src/system_helpers.rs
index 8beb1e1..bffed4c 100644
--- a/src-tauri/src/system_helpers.rs
+++ b/src-tauri/src/system_helpers.rs
@@ -77,6 +77,7 @@ pub fn copy_file(path: String, new_path: String) -> bool {
   }
 }
 
+#[tauri::command]
 pub fn install_location() -> String {
   let mut exe_path = std::env::current_exe().unwrap();
 
diff --git a/src/ui/App.tsx b/src/ui/App.tsx
index 03b9cf6..0f36bd0 100644
--- a/src/ui/App.tsx
+++ b/src/ui/App.tsx
@@ -18,9 +18,10 @@ import Game from './components/menu/Game'
 import RightBar from './components/RightBar'
 import { getConfigOption, setConfigOption } from '../utils/configuration'
 import { invoke } from '@tauri-apps/api'
-import { dataDir } from '@tauri-apps/api/path'
+import { appDir, dataDir } from '@tauri-apps/api/path'
 import { appWindow } from '@tauri-apps/api/window'
 import { convertFileSrc } from '@tauri-apps/api/tauri'
+import { getTheme, loadTheme } from '../utils/themes'
 
 interface IProps {
   [key: string]: never;
@@ -82,6 +83,13 @@ class App extends React.Component<IProps, IState> {
     const game_path = game_exe.substring(0, game_exe.replace(/\\/g, '/').lastIndexOf('/'))
     const root_path = game_path.substring(0, game_path.replace(/\\/g, '/').lastIndexOf('/'))
 
+    // Load a theme if it exists
+    const theme = await getConfigOption('theme')
+    if (theme) {
+      const themeObj = await getTheme(theme)
+      loadTheme(themeObj, document)
+    }
+
     if(!custom_bg || !/png|jpg|jpeg$/.test(custom_bg)) {
       if(game_path) {
         // Get the bg by invoking, then set the background to that bg.
diff --git a/src/ui/components/menu/Options.tsx b/src/ui/components/menu/Options.tsx
index d74a086..1498823 100644
--- a/src/ui/components/menu/Options.tsx
+++ b/src/ui/components/menu/Options.tsx
@@ -1,13 +1,15 @@
 import React from 'react'
+import { invoke } from '@tauri-apps/api'
+import { dataDir } from '@tauri-apps/api/path'
 import DirInput from '../common/DirInput'
 import Menu from './Menu'
 import Tr, { getLanguages } from '../../../utils/language'
-import './Options.css'
 import { setConfigOption, getConfig, getConfigOption } from '../../../utils/configuration'
 import Checkbox from '../common/Checkbox'
 import Divider from './Divider'
-import { invoke } from '@tauri-apps/api'
-import { dataDir } from '@tauri-apps/api/path'
+import { getThemeList } from '../../../utils/themes'
+
+import './Options.css'
 
 interface IProps {
   closeFn: () => void;
@@ -21,6 +23,8 @@ interface IState {
   language_options: { [key: string]: string }[],
   current_language: string
   bg_url_or_path: string
+  themes: string[]
+  theme: string
 }
 
 export default class Options extends React.Component<IProps, IState> {
@@ -34,7 +38,9 @@ export default class Options extends React.Component<IProps, IState> {
       grasscutter_with_game: false,
       language_options: [],
       current_language: 'en',
-      bg_url_or_path: ''
+      bg_url_or_path: '',
+      themes: ['default'],
+      theme: ''
     }
 
     this.toggleGrasscutterWithGame = this.toggleGrasscutterWithGame.bind(this)
@@ -52,7 +58,9 @@ export default class Options extends React.Component<IProps, IState> {
       grasscutter_with_game: config.grasscutter_with_game || false,
       language_options: languages,
       current_language: config.language || 'en',
-      bg_url_or_path: config.customBackground || ''
+      bg_url_or_path: config.customBackground || '',
+      themes: (await getThemeList()).map(t => t.name),
+      theme: config.theme || 'default'
     })
 
     this.forceUpdate()
@@ -70,8 +78,14 @@ export default class Options extends React.Component<IProps, IState> {
     setConfigOption('java_path', value)
   }
 
-  setLanguage(value: string) {
-    setConfigOption('language', value)
+  async setLanguage(value: string) {
+    await setConfigOption('language', value)
+    window.location.reload()
+  }
+
+  async setTheme(value: string) {
+    await setConfigOption('theme', value)
+    window.location.reload()
   }
 
   async toggleGrasscutterWithGame() {
@@ -140,6 +154,28 @@ export default class Options extends React.Component<IProps, IState> {
 
         <Divider />
 
+        <div className='OptionSection'>
+          <div className='OptionLabel'>
+            <Tr text="options.theme" />
+          </div>
+          <div className='OptionValue'>
+            <select value={this.state.theme} onChange={(event) => {
+              this.setTheme(event.target.value)
+            }}>
+              {this.state.themes.map(t => (
+                <option
+                  key={t}
+                  value={t}>
+
+                  {t}
+                </option>
+              ))}
+            </select>
+          </div>
+        </div>
+
+        <Divider />
+
         <div className='OptionSection'>
           <div className='OptionLabel'>
             <Tr text="options.java_path" />
diff --git a/src/utils/configuration.ts b/src/utils/configuration.ts
index 4594d4a..2893655 100644
--- a/src/utils/configuration.ts
+++ b/src/utils/configuration.ts
@@ -18,6 +18,7 @@ let defaultConfig: Configuration
     language: 'en',
     customBackground: '',
     cert_generated: false,
+    theme: 'default'
   }
 })()
 
@@ -37,6 +38,7 @@ export interface Configuration {
   language: string
   customBackground: string
   cert_generated: boolean
+  theme: string;
 }
 
 export async function setConfigOption(key: string, value: any): Promise<void> {
diff --git a/src/utils/themes.ts b/src/utils/themes.ts
index 462959c..e0c3309 100644
--- a/src/utils/themes.ts
+++ b/src/utils/themes.ts
@@ -1,4 +1,6 @@
 import { invoke } from '@tauri-apps/api'
+import { dataDir } from '@tauri-apps/api/path'
+import { convertFileSrc } from '@tauri-apps/api/tauri'
 
 interface Theme {
   name: string
@@ -24,10 +26,34 @@ interface ThemeList extends Theme {
   path: string
 }
 
+const defaultTheme = {
+  name: 'default',
+  version: '1.0.0',
+  description: 'Default theme',
+  includes: {
+    css: [],
+    js: []
+  },
+  path: 'default'
+}
 export async function getThemeList() {
   // Do some invoke to backend to get the theme list
-  const themes = await invoke('get_theme_list') as BackendThemeList[]
-  const list: ThemeList[] = []
+  const themes = await invoke('get_theme_list', {
+    dataDir: `${await dataDir()}/cultivation`
+  }) as BackendThemeList[]
+  const list: ThemeList[] = [
+    // ALWAYS include default theme
+    {
+      name: 'default',
+      version: '1.0.0',
+      description: 'Default theme',
+      includes: {
+        css: [],
+        js: []
+      },
+      path: 'default'
+    }
+  ]
 
   themes.forEach(t => {
     let obj
@@ -44,6 +70,59 @@ export async function getThemeList() {
   return list
 }
 
-export async function loadTheme(theme: string) {
-  // Do some invoke to backend to load the theme
+export async function getTheme(name: string) {
+  const themes = await getThemeList()
+
+  return themes.find(t => t.name === name) || defaultTheme
+}
+
+export async function loadTheme(theme: ThemeList, document: Document) {
+  // We are going to dynamically load stylesheets into the document
+  const head = document.head
+
+  // Get all CSS includes
+  const cssIncludes = theme.includes.css
+  const jsIncludes = theme.includes.js
+
+  // Load CSS files
+  cssIncludes.forEach(css => {
+    if (!css) return
+
+    const link = document.createElement('link')
+
+    link.rel = 'stylesheet'
+    link.href = convertFileSrc(theme.path + '/' + css)
+    head.appendChild(link)
+  })
+
+  // Load JS files
+  jsIncludes.forEach(js => {
+    if (!js) return
+
+    const script = document.createElement('script')
+
+    script.src = convertFileSrc(theme.path + '/' + js)
+    head.appendChild(script)
+  })
+
+  // Set custom background
+  if (theme.customBackgroundURL) {
+    document.body.style.backgroundImage = `url('${theme.customBackgroundURL}')`
+  }
+
+  // Set custom background
+  if (theme.customBackgroundPath) {
+    const bgPath = await dataDir() + 'cultivation/grasscutter/theme.png'
+
+    // Save the background to our data dir
+    await invoke('copy_file', {
+      path: theme.path + '/' + theme.customBackgroundPath,
+      new_path: bgPath
+    })
+
+    // Set the background
+    document.body.style.backgroundImage = `url('${bgPath}')`
+  }
+
+  return
 }
\ No newline at end of file