Examine source code of Depeched

{
  "theme": {
    "images": {
      "theme_frame": "DepecheModeHead.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Depeched",
  "manifest_version": 2,
  "description": "Music Band of Depeche Mode Persona for Fire Fox.\n\nThe image used in this persona is not belongs to me. I create this persona for my personal use. It looks good to me on Firefox so I decided to share it with other fans of Depeche Mode."
}