Examine source code of Palpitations

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ff9900"
    }
  },
  "version": "2.0",
  "name": "Palpitations",
  "manifest_version": 2,
  "description": "Awesome picture by Adi Dizdarevic\nBehance: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/479f77d61ac5f3a0b66f80e02f72577adb745e77b8676c20e410093362cc8ffc/https%3A//www.behance.net/dyya\">https://www.behance.net/dyya</a>"
}