Examine source code of Mistic River

{
  "theme": {
    "images": {
      "theme_frame": "PersonaSGHead2.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Mistic River",
  "manifest_version": 2,
  "description": "This is an image I took and added the river to. \n\nVisit us at <a href=\"https://outgoing.prod.mozaws.net/v1/8c1dafbed72b38952be2952b12bba19b0f4aae23de82df81d4e00511904b79af/http%3A//www.SephGrave.com\" rel=\"nofollow\">http://www.SephGrave.com</a>"
}