Examine source code of Moonlit Oasis

{
  "theme": {
    "images": {
      "theme_frame": "hdmoonlitoasis.jpg"
    },
    "colors": {
      "frame": "#252f8e",
      "tab_background_text": "#767776"
    }
  },
  "version": "2.0",
  "name": "Moonlit Oasis",
  "manifest_version": 2,
  "description": "Firefox Persona version of my “Moonlit Oasis” wallpaper. 3D artwork by Ryan Bliss. \n\nPersona Designed by Mark Hamilton for Digital Blasphemy. \n\nWallpaper available at <a href=\"https://outgoing.prod.mozaws.net/v1/efdd4676ba98f33eeff399d44b1f36896eef02cd55442eb1494df2b78b289d4b/http%3A//digitalblasphemy.com/preview.shtml%3Fi=moonlitoasis1\" rel=\"nofollow\">http://digitalblasphemy.com/preview.shtml?i=moonlitoasis1</a>"
}