Examine source code of Technology Simplified

{
  "theme": {
    "images": {
      "theme_frame": "spantree-top3-1-l.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Technology Simplified",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/63988f886a347d8fc10a308662fd20226060a4987647d67893ab31edb76500ce/http%3A//www.spantree.co.uk\" rel=\"nofollow\">www.spantree.co.uk</a>"
}