Examine source code of WikiBrite

{
  "theme": {
    "images": {
      "theme_frame": "header01.jpg"
    },
    "colors": {
      "frame": "#b2b2ed",
      "tab_background_text": "#040442"
    }
  },
  "version": "2.0",
  "name": "WikiBrite",
  "manifest_version": 2,
  "description": "Rainbow Brite Wiki Style theme, mirrors the Wiki*Brite (<a href=\"https://outgoing.prod.mozaws.net/v1/21be69f5109a8a0e727338354b1627695820aaaeeb819363a59fd33b9bdf1e2f/http%3A//wiki.rainbowbrite.co.uk\" rel=\"nofollow\">wiki.rainbowbrite.co.uk</a>) design with Rainbow and Stars"
}