Examine source code of Hackmode

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#c9c9c9",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Hackmode",
  "manifest_version": 2,
  "description": "Hackmode is an original piece of digital artwork designed by me as a background for my websites and blogs. See it in its native habitat at <a href=\"https://outgoing.prod.mozaws.net/v1/1fb6f22105d781989c7d1f8efbf8ef909ce53e58e574d925cd1fbe5d0aa3dc0c/http%3A//xenopologist.com\" rel=\"nofollow\">xenopologist.com</a>"
}