Examine source code of Ninty.gr Mushroom

{
  "theme": {
    "images": {
      "theme_frame": "nintytheme.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Ninty.gr Mushroom",
  "manifest_version": 2,
  "description": "This is the first try on a <a href=\"https://outgoing.prod.mozaws.net/v1/efd329d99b4bc364b479487ffd1d3a1df7b0244d6097b7ad079003695c4d0c5e/http%3A//ninty.gr\" rel=\"nofollow\">ninty.gr</a> persona!"
}