Examine source code of Solace Within Black

{
  "theme": {
    "images": {
      "theme_frame": "bannerfirefox3.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#c9c9c9"
    }
  },
  "version": "2.0",
  "name": "Solace Within Black",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/943b4b0a26ae9ba21a530489468129549f86692dda956b5dcdf8ff94f506333f/http%3A//www.solacewithin.nl\" rel=\"nofollow\">www.solacewithin.nl</a>"
}