Examine source code of Broken Computer Screen

{
  "theme": {
    "images": {
      "theme_frame": "Header131031.png"
    },
    "colors": {
      "frame": "#7d7d7d",
      "tab_background_text": "#d9d9d9"
    }
  },
  "version": "2.0",
  "name": "Broken Computer Screen",
  "manifest_version": 2,
  "description": "Created, so my background and my Firefox would look the same:P"
}