Examine source code of AuroraBorealis

{
  "theme": {
    "images": {
      "theme_frame": "FirstPersonaNew.png"
    },
    "colors": {
      "frame": "#e38bcd",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "AuroraBorealis",
  "manifest_version": 2,
  "description": "This is the classic Aurora Borealis image from OS X systems. I created it with the help of a tutorial from <a href=\"https://outgoing.prod.mozaws.net/v1/1544a40cf32a87afce890e5cb111dfd10b20a240d2733608ebe0b52972f324a7/http%3A//abduzeedo.com\" rel=\"nofollow\">abduzeedo.com</a>"
}