Examine source code of Crooks & Castles

{
  "theme": {
    "images": {
      "theme_frame": "CrooksandCastlesPersona.jpg"
    },
    "colors": {
      "frame": "#f5f5f5",
      "tab_background_text": "#ff0000"
    }
  },
  "version": "2.0",
  "name": "Crooks & Castles",
  "manifest_version": 2,
  "description": "Give credit to <a href=\"https://outgoing.prod.mozaws.net/v1/d025197b2b264ab2f678c23cd873583618079a676dd7b42882325df023cf04bc/http%3A//www.crooksncastles.com\" rel=\"nofollow\">http://www.crooksncastles.com</a>"
}