Examine source code of Happy Accident

{
  "theme": {
    "images": {
      "theme_frame": "g-persona.jpg"
    },
    "colors": {
      "frame": "#f79b45",
      "tab_background_text": "#efefef"
    }
  },
  "version": "2.0",
  "name": "Happy Accident",
  "manifest_version": 2,
  "description": "Happy Accident is based up the idea of a set-up sheet used for offset printing. Multiple layers of images to ensure a good print. For more creative ideas, www.thegbrand.com"
}