Examine source code of SDFish

{
  "theme": {
    "images": {
      "theme_frame": "firefoxpersona.png"
    },
    "colors": {
      "frame": "#cccccc",
      "tab_background_text": "#5c5c5c"
    }
  },
  "version": "2.0",
  "name": "SDFish",
  "manifest_version": 2,
  "description": "Official Firefox persona of the San Diego fishing website <a href=\"https://outgoing.prod.mozaws.net/v1/c7f73159e162ba077dc4db3af28f4e8728909b83f9949a28c604f80e84cfa8e3/http%3A//SDFish.com\" rel=\"nofollow\">SDFish.com</a>"
}