Examine source code of Echoes DB

{
  "theme": {
    "images": {
      "theme_frame": "hdecho2.jpg"
    },
    "colors": {
      "frame": "#8a8a8a",
      "tab_background_text": "#878787"
    }
  },
  "version": "2.0",
  "name": "Echoes DB",
  "manifest_version": 2,
  "description": "Firefox Persona version of my “Echoes” wallpaper. 3D artwork by Ryan Bliss. Persona Designed by Mark Hamilton for Digital Blasphemy. Wallpaper available at <a href=\"https://outgoing.prod.mozaws.net/v1/00ad908288bde7d3ca7074e6cb35e95b8454a4786993fd4021d52cb1c3afce90/http%3A//digitalblasphemy.com/preview.shtml%3Fi=echoes\" rel=\"nofollow\">http://digitalblasphemy.com/preview.shtml?i=echoes</a>"
}