Examine source code of yummy Bill

{
  "theme": {
    "images": {
      "theme_frame": "12personaheader.jpg"
    },
    "colors": {
      "frame": "#00b6aa",
      "tab_background_text": "#00b6aa"
    }
  },
  "version": "2.0",
  "name": "yummy Bill",
  "manifest_version": 2,
  "description": "the answer is nothing ! maybe tom ;)"
}