Examine source code of Rad Racing 2

{
  "theme": {
    "images": {
      "theme_frame": "BrowserHeaderRadRacing2.jpg"
    },
    "colors": {
      "frame": "#787878",
      "tab_background_text": "#fafafa"
    }
  },
  "version": "2.0",
  "name": "Rad Racing 2",
  "manifest_version": 2,
  "description": "I made a grey and black gradiant for this persona, and made The Rad Racing logo"
}