Examine source code of Easter egg on herb

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#8dcffc",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Easter egg on herb",
  "manifest_version": 2,
  "description": "Все мои темы здесь: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/3b0b50625e9672fe77cd76335aba444b7cd79f9c5bfc3ce71c1e4e1e91d45a02/https%3A//goo.gl/p3j4Q3\">https://goo.gl/p3j4Q3</a>"
}