Examine source code of Hazy emptiness

{
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  "version": "1.0",
  "name": "Hazy emptiness",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(124, 151, 151)",
      "toolbar_text": "rgb(5, 15, 65)",
      "frame": "rgb(22, 33, 40)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(248, 112, 140)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(8, 8, 11)",
      "tab_loading": "rgb(248, 112, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f55d02a9-57b1-427c-8a9c-9b28e68abcd0}"
    }
  }
}