Examine source code of Sunset Grass

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0b0d0f",
      "tab_background_text": "#ffff99"
    }
  },
  "version": "2.0",
  "name": "Sunset Grass",
  "manifest_version": 2,
  "description": "My wallpaper to match is at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/7c3bca1b0311dafbfdfc6fc5f72da5bb6d08f8fcddabe92357c3fee1eb960c6b/https%3A//nature.desktopnexus.com/wallpaper/2158556/\">https://nature.desktopnexus.com/wallpaper/2158556/</a>"
}