Examine source code of Speed.cd Amber Arrows

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_01.jpg"
    },
    "colors": {
      "frame": "#212121",
      "tab_background_text": "#ffb400"
    }
  },
  "version": "2.0",
  "name": "Speed.cd Amber Arrows",
  "manifest_version": 2,
  "description": "Persona made for the <a href=\"https://outgoing.prod.mozaws.net/v1/ac7d17c9d43f2f170aa9a37c8e68f53846549cea1a293633e00a8702c5249bf6/http%3A//speed.cd\" rel=\"nofollow\">speed.cd</a> community."
}