Examine source code of CSS Modifier Pro

{
  "manifest_version": 3,
  "name": "CSS Modifier Pro",
  "version": "1.0",
  "description": "Modifie les propriétés CSS existantes d'une page.",
  "permissions": [
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "gameurdev@gmail.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}