Examine source code of Digioso v2

{
  "theme": {
    "images": {
      "theme_frame": "1_468x601.JPG"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ff0000"
    }
  },
  "version": "2.0",
  "name": "Digioso v2",
  "manifest_version": 2,
  "description": "Banner of <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/1406d589da5ef7b1e3e259840db3e4696b7d6bb926f90936b32de9796dc0ab0f/http%3A//www.digioso.org\">http://www.digioso.org</a>"
}