Examine source code of Webtion Europe

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0d004c",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Webtion Europe",
  "manifest_version": 2,
  "description": "Made for the satisfied visitors of <a href=\"https://outgoing.prod.mozaws.net/v1/651b2821c67cb7e422f31336ece112034512a0829113705f0f1ffd8dbae23de2/http%3A//www.webtion.eu\" rel=\"nofollow\">www.webtion.eu</a>"
}