Examine source code of Simple Stars

{
  "theme": {
    "images": {
      "theme_frame": "stars-top.jpg"
    },
    "colors": {
      "frame": "#9c9c9c",
      "tab_background_text": "#9c9c9c"
    }
  },
  "version": "2.0",
  "name": "Simple Stars",
  "manifest_version": 2,
  "description": "Simple Stars.\nOriginal Wallpaper @ <a href=\"https://outgoing.prod.mozaws.net/v1/d73e1ab65401331fd6b74c51d3c9b57c86b57e7ae5673b48caed935ab7498559/http%3A//wallbase.cc\" rel=\"nofollow\">wallbase.cc</a>\n\nUpdated: Tweaked repeating stars and accent colour."
}