Examine source code of Lotto

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Lotto",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-031-9570e8d1f7a5f835c92e764693337f43.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(27, 91, 140)",
      "toolbar_text": "rgb(251, 201, 182)",
      "frame": "rgb(42, 49, 64)",
      "tab_background_text": "rgb(223, 158, 158)",
      "toolbar_field": "rgb(65, 190, 164)",
      "toolbar_field_text": "rgb(241, 230, 214)",
      "tab_line": "rgb(223, 158, 158)",
      "popup": "rgb(65, 190, 164)",
      "popup_text": "rgb(251, 201, 182)",
      "tab_loading": "rgb(223, 158, 158)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2c16603d-172b-45a8-9ad8-70949d04c15a}"
    }
  }
}