Examine source code of Color Generator

{
  "manifest_version": 2,
  "name": "Color Generator",
  "description": "Generates random color",
  "author": "Amirali Pourmehdi",
  "version": "1.14",
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": "icon128.png",
    "icons": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_popup": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{810da29f-87f0-49c1-83c1-497882cf6fa1}"
    }
  }
}