Examine source code of Gallifreyan Grunge

{
  "theme": {
    "images": {
      "theme_frame": "gallifreyangrungeII.jpg"
    },
    "colors": {
      "frame": "#9aa8ab",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Gallifreyan Grunge",
  "manifest_version": 2,
  "description": "Doctor Who inspired... although its pretty abstract"
}