Examine source code of Grateful Forest

{
  "theme": {
    "images": {
      "theme_frame": "forest7.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#1f6b17"
    }
  },
  "version": "2.0",
  "name": "Grateful Forest",
  "manifest_version": 2,
  "description": "Grateful Dead Forest, dancing bears, turtle VW peace Bus, Terrapin, <a href=\"https://outgoing.prod.mozaws.net/v1/b70af3ba065fca19093fb2b9e944f732ac3332743df9060b83f46a9e87c10a64/http%3A//DeadVids.com\" rel=\"nofollow\">DeadVids.com</a>"
}