Examine source code of SuperSonic

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#f7ff00",
      "tab_background_text": "#e6bc00"
    }
  },
  "version": "2.0",
  "name": "SuperSonic",
  "manifest_version": 2,
  "description": "SuperSonic...first firefox persona XD so expect nothing special"
}