Examine source code of SUBETA

{
  "theme": {
    "images": {
      "theme_frame": "subetadifference.jpg"
    },
    "colors": {
      "frame": "#a19b9b",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "SUBETA",
  "manifest_version": 2,
  "description": "random design with pets from the <a href=\"https://outgoing.prod.mozaws.net/v1/6567d77172abde36b35e71231263ea3a3b2d4a30b10eb0c928cb663a24393d3c/http%3A//subeta.net\" rel=\"nofollow\">subeta.net</a> website"
}