Examine source code of Colour Party

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Colour Party",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-045-3e6898966e6ccdc87f80d23d4e7a6a49.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(236, 215, 157)",
      "toolbar_text": "rgb(80, 147, 162)",
      "frame": "rgb(197, 119, 218)",
      "tab_background_text": "rgb(237, 212, 54)",
      "toolbar_field": "rgb(177, 237, 235)",
      "toolbar_field_text": "rgb(54, 123, 145)",
      "tab_line": "rgb(235, 212, 54)",
      "popup": "rgb(177, 237, 235)",
      "popup_text": "rgb(54, 123, 145)",
      "tab_loading": "rgb(235, 212, 54)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b996af3b-ddf8-45d9-b037-0756fd053b78}"
    }
  }
}