Examine source code of Plangi

{
  "theme": {
    "images": {
      "theme_frame": "rainbow.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#bfebf2"
    }
  },
  "version": "2.0",
  "name": "Plangi",
  "manifest_version": 2,
  "description": "Gerakan Sejuta Data Budaya,\ndi <a href=\"https://outgoing.prod.mozaws.net/v1/ef3ff3e95b1636d412e627ccabe0da62437eb1f8ea5c22d48ea5eafd2d95482d/http%3A//budaya-indonesia.org\" rel=\"nofollow\">http://budaya-indonesia.org</a>"
}