Examine source code of Navidad 2022

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Navidad 2022",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0.01)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(255, 255, 255, 0.01)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(248, 112, 140, 0.03)",
      "popup": "rgba(0, 0, 0, 0)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgba(248, 112, 140, 0.03)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fa8cbdb4-761b-4ec7-93db-613c9edd0f7e}"
    }
  }
}