Examine source code of fronzen

{
  "name": "fronzen",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "97576045-illustrazione-in-stile-di-vetro-macchiato-con-pesce-arcobaleno-geometrico-astratto-su-priorità-bassa-b.jpg"
    },
    "colors": {
      "frame": "rgba(13, 19, 33, 1)",
      "tab_background_text": "rgba(162, 230, 78, 1)",
      "toolbar": "rgba(184, 0, 21, 1)",
      "bookmark_text": "rgba(80, 184, 66, 1)",
      "toolbar_field_text": "rgba(141, 123, 173, 1)"
    }
  }
}