Examine source code of BagArts

{
  "theme": {
    "images": {
      "theme_frame": "firefox1.png"
    },
    "colors": {
      "frame": "#7a7a7a",
      "tab_background_text": "#e8dada"
    }
  },
  "version": "2.0",
  "name": "BagArts",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/b773f0fc08cb580df41d8af6cddb2dd0b265830745011f7191eae5ba747ede62/http%3A//BagArts.de\" rel=\"nofollow\">BagArts.de</a> - Webdesign &amp; Tutorials - Ein Persona passent zu BagArts :D"
}