Examine source code of A Paint.NET Creation IV

{
  "theme": {
    "images": {
      "theme_frame": "Paint.NETPersona3top.jpg"
    },
    "colors": {
      "frame": "#666666",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "A Paint.NET Creation IV",
  "manifest_version": 2,
  "description": "My fourth (actually third) Firefox Persona created with <a href=\"https://outgoing.prod.mozaws.net/v1/27597fb86425e97bab24d0abab3630ebe35de78c319b3a868f23a9ca59f2fd3a/http%3A//Paint.NET\" rel=\"nofollow\">Paint.NET</a> (<a href=\"https://outgoing.prod.mozaws.net/v1/820d12f2ac0ca898ac282a197007a75a2b1b2fad4cf7d24481519319648d8b79/http%3A//www.getpaint.net\" rel=\"nofollow\">http://www.getpaint.net</a>)"
}