Examine source code of Dark Mode Scheduler

{
  "manifest_version": 2,
  "name": "Dark Mode Scheduler",
  "version": "1.0",
  "description": "Automatically toggle dark mode on websites based on a schedule.",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2923cdeb-95b5-4e9d-bb8c-756287bc5fcc}"
    }
  }
}