Examine source code of Prospect Smarter

{
  "theme": {
    "images": {
      "theme_frame": "psi-header.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Prospect Smarter",
  "manifest_version": 2,
  "description": "Prospect Smarter with <a href=\"https://outgoing.prod.mozaws.net/v1/d60d1df005ecc32a32f8014be86d7bb105f4f0dbe120ecd931450378d952c652/http%3A//Enthusem.com\" rel=\"nofollow\">Enthusem.com</a>!"
}