Examine source code of rubraoblogspot

{
  "theme": {
    "images": {
      "theme_frame": "Firefox.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#f5f0f0"
    }
  },
  "version": "2.0",
  "name": "rubraoblogspot",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/3f2fe95b4366d03fbee0fabf0a09b696de39f6442edf23bc238195ad2c079c27/http%3A//www.rubrao.blogspot.com\" rel=\"nofollow\">www.rubrao.blogspot.com</a>"
}