Load system theme for dark mode

src/main/index.ts

@@ -12,7 +12,8 @@ import {
   MenuItemConstructorOptions,
   IpcMainEvent,
   Notification,
-  NotificationConstructorOptions
+  NotificationConstructorOptions,
+  nativeTheme
 } from 'electron'
 import Datastore from 'nedb'
 import { isEmpty } from 'lodash'
@@ -214,6 +215,11 @@ async function createWindow() {
   const language = await getLanguage()
   i18next.changeLanguage(language)
 
+  /**
+   * Load system theme color for dark mode
+   */
+  nativeTheme.themeSource = 'system'
+
   /**
    * Set application menu
    */