Examine source code of Inversify

{
  "manifest_version": 3,
  "name": "Inversify - Powered by A2Z.Tools",
  "version": "1.0",
  "description": "Inverts the colors of any website to their opposite. Powered by A2Z.Tools.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "inversify@example.com"
    }
  }
}