Examine source code of Democrats.org Persona

{
  "theme": {
    "images": {
      "theme_frame": "Flag_Democrat.jpg"
    },
    "colors": {
      "frame": "#c9c9c9",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Democrats.org Persona",
  "manifest_version": 2,
  "description": "Based on the <a href=\"https://outgoing.prod.mozaws.net/v1/31fcb9e2165fab7ceca5733b5fd8cbc9045986ad3cf5d0b6547fb682349d1174/http%3A//Democrats.org\" rel=\"nofollow\">Democrats.org</a> website, a theme that shows your patriotic spirit!"
}