Examine source code of Game-Flush.com 1

{
  "theme": {
    "images": {
      "theme_frame": "persona1_top.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Game-Flush.com 1",
  "manifest_version": 2,
  "description": "Flush your favorite (and least favorite) video games with this Persona from <a href=\"https://outgoing.prod.mozaws.net/v1/86b28ddb2f80039b22303a55c2d19bc16836c9c7ae02ec3631d845cd184c5aae/http%3A//Game-Flush.com\" rel=\"nofollow\">Game-Flush.com</a>."
}