Examine source code of Zorin BlueDark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Zorin BlueDark",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(30, 40, 48)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(39, 53, 63)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(30, 40, 48)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(30, 40, 48)",
      "popup": "rgb(39, 53, 63)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(30, 40, 48)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{84e46f41-96b1-4cf9-891e-d8fbd04adc3c}"
    }
  }
}