Examine source code of Imagination by MaDonna

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0e2454",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Imagination by MaDonna",
  "manifest_version": 2,
  "description": "My wallpaper to match is at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/2f9f58420afdbc691aa050c2fe20345bf190f60cf60b4972f97548466f77189a/https%3A//nature.desktopnexus.com/wallpaper/2140811/\">https://nature.desktopnexus.com/wallpaper/2140811/</a>"
}