Examine source code of D.Va

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#f2f2f2",
      "tab_background_text": "#446ebd"
    }
  },
  "version": "2.0",
  "name": "D.Va",
  "manifest_version": 2,
  "description": "Firefox theme featuring <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/ed401e82faeb259f556106b47994c14658622df92903e0592ae4667ddf14ebe8/http%3A//D.Va\">D.Va</a> from Overwatch. For more anime themes, please visit <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/7eb8fd0c67a15ad58872ad7b2460a8d05842ab89c5f24c812e2b8d6e05eb3470/http%3A//randomnessthing.com\">http://randomnessthing.com</a>.\n\n~ kazasou"
}