Examine source code of Whimsical Unicorn

{
  "manifest_version": 2,
  "version": "3.0",
  "name": "Whimsical Unicorn 2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(7, 10, 55, 0)",
      "toolbar_field": "rgba(211, 234, 252, 0.08)",
      "toolbar_field_text": "rgb(251, 252, 194)",
      "tab_line": "rgb(192, 132, 255)",
      "popup": "rgb(7, 10, 55)",
      "popup_text": "rgb(251, 252, 194)",
      "tab_loading": "rgb(192, 132, 255)",
      "bookmark_text": "rgb(255, 204, 242)",
      "frame": "rgb(7, 10, 55)",
      "tab_background_text": "rgb(211, 234, 252)"
    }
  }
}