Examine source code of African Mountain Range

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#bfddf5",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "African Mountain Range",
  "manifest_version": 2,
  "description": "Photo by tpsdave via <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/93621fb716a33b0face81640d490435f2bdf15f234c47cfb07727408633b48d7/https%3A//iwaria.com/\">Iwaria</a>"
}