Examine source code of Void Linux-Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Void Linux-Dark",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(71, 128, 97)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(26, 28, 29)",
      "tab_background_text": "rgb(171, 194, 171)",
      "toolbar_field": "rgb(26, 28, 29)",
      "toolbar_field_text": "rgb(171, 194, 171)",
      "tab_line": "rgb(71, 128, 97)",
      "popup": "rgb(26, 28, 29)",
      "popup_text": "rgb(171, 194, 171)",
      "tab_loading": "rgb(71, 128, 97)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e11781d7-2833-4f3c-bb48-06c9cac693ff}"
    }
  }
}