Examine source code of RMMontage

{
  "theme": {
    "images": {
      "theme_frame": "Sopra2.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "RMMontage",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/b628656364a944cd08fa474043d0b03189376f2b2b144c587a69a7831af3b256/http%3A//www.youtube.com/user/RMMontage\" rel=\"nofollow\">http://www.youtube.com/user/RMMontage</a>"
}