Examine source code of Led Zeppelin

{
  "theme": {
    "images": {
      "theme_frame": "Led.jpg"
    },
    "colors": {
      "frame": "#808080",
      "tab_background_text": "#808080"
    }
  },
  "version": "2.0",
  "name": "Led Zeppelin",
  "manifest_version": 2,
  "description": "Led Zeppelin in Early Days + Four Symbols (so called Zoso) = Everything a Led Zeppelin's fan would want in his browser ^^"
}