Examine source code of Mushrooms222

{
  "theme": {
    "images": {
      "theme_frame": "FIREFOX2.jpg"
    },
    "colors": {
      "frame": "#5bc9fc",
      "tab_background_text": "#f7f7f7"
    }
  },
  "version": "2.0",
  "name": "Mushrooms222",
  "manifest_version": 2,
  "description": "mushrooms...image from deviant art i dont own this all rights to artist!"
}