Examine source code of Simple Dark Mode Toggle

{
  "manifest_version": 2,
  "name": "Simple Dark Mode Toggle",
  "version": "1.0",
  "description": "Toggle dark mode by inverting colors on web pages.",
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Toggle Dark Mode"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b7b12cdf-8fe4-44ab-83a2-5f98d4161ce4}"
    }
  }
}