Examine source code of Justin Bieber 123

{
  "theme": {
    "images": {
      "theme_frame": "bieber_smile_header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#408cad"
    }
  },
  "version": "2.0",
  "name": "Justin Bieber 123",
  "manifest_version": 2,
  "description": "A header with Justin Bieber. The pictures are from a photoshoot ;) hope u like this :)"
}