Examine source code of Farvahar Sign

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#4d9e37",
      "tab_background_text": "#4d9e37"
    }
  },
  "version": "2.0",
  "name": "Farvahar Sign",
  "manifest_version": 2,
  "description": "Faravahar is one of the best-known symbols of Zoroastrianism, the state religion of ancient Iran...\n\nMore details on : <a href=\"https://outgoing.prod.mozaws.net/v1/3f9a352d7ac17bcfe99533f7b1100b3d3b1f6483f8281456e59cd70baa8db248/http%3A//en.wikipedia.org/wiki/Farvahar\" rel=\"nofollow\">http://en.wikipedia.org/wiki/Farvahar</a>"
}