Examine source code of Rain in Green

{
  "theme": {
    "images": {
      "theme_frame": "nature3000x200.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Rain in Green",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/6e5f5bd404bb124e27c79f57b7f4a79e59dc1c8d5115a177ca6064da958387a4/http%3A//badtrane.deviantart.com/art/Rain-in-Green-156396584\" rel=\"nofollow\">http://badtrane.deviantart.com/art/Rain-in-Green-156396584</a>"
}