Examine source code of Spotbet

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Green Flag Day",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(77, 198, 27, 0.08)",
      "toolbar_text": "rgb(234, 47, 11)",
      "frame": "rgb(212, 227, 208)",
      "tab_background_text": "rgb(210, 35, 187)",
      "toolbar_field": "rgba(41, 151, 11, 0.02)",
      "toolbar_field_text": "rgb(234, 47, 11)",
      "tab_line": "rgb(248, 112, 230)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(248, 112, 230)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3296ccdd-6d74-4088-a255-d040ae8253b7}"
    }
  }
}