Dark Theme for Wikipedia page

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Dark Theme for Wikipedia page",
  "description": "Makes the background dark and changes the leading color",
  "version": "1.1",
  "icons": {
    "16": "/images/logo-16.png",
    "48": "/images/logo-48.png",
    "128": "/images/logo-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.wikipedia.org/*"
      ],
      "css": [
        "main.css"
      ],
      "run_at": "document_start",
      "js": [
        "main.js"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "background": {
    "service_worker": "/background.js"
  },
  "action": {
    "default_action": "/images/logo-16.png",
    "default_popup": "main.html",
    "default_title": "Popup"
  }
}