Examine source code of graywah

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_TEMPLATE.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#1c1c1c"
    }
  },
  "version": "2.0",
  "name": "graywah",
  "manifest_version": 2,
  "description": "gray personas by <a href=\"https://outgoing.prod.mozaws.net/v1/5a8ae2b84233347737cc2237adeb69af674deb4a3d6888ae3c25c0d2f5b6c781/http%3A//wahtaljouf.com\" rel=\"nofollow\">wahtaljouf.com</a>"
}