Examine source code of RTL Silverbulle

{
  "manifest_version": 2,
  "name": "RTL Silverbulle",
  "version": "1.0",
  "description": "Fix Silverbulle RTL manually or automatically on selected websites.",
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "browser_action": {
    "default_title": "Apply RTL Fix",
    "default_icon": {
      "16": "icons/icon_16.png",
      "48": "icons/icon_48.png",
      "128": "icons/icon_128.png"
    }
  },
  "icons": {
    "16": "icons/icon_16.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "rtl-silverbulle@example.com",
      "strict_min_version": "91.0",
      "data_collection_permissions": {
        "collects_data": false,
        "required": [
          "none"
        ]
      }
    }
  }
}