Examine source code of m5board

{
  "theme": {
    "images": {
      "theme_frame": "firefoxbarcopy.jpg"
    },
    "colors": {
      "frame": "#a3a3a3",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "m5board",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/e4ac82a16275e0181b38431587dc080b13710e20bca20f40d68a5ff42a4c1830/http%3A//m5board.com\" rel=\"nofollow\">m5board.com</a> Persona"
}