Examine source code of Wired

{
  "name": "Wired",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "colors": {
      "frame": "#1b1b1b",
      "tab_background_text": "#b2ffff",
      "toolbar": "#1b1b1b",
      "bookmark_text": "#b2ffff",
      "toolbar_field": "#1b1b1b",
      "toolbar_field_text": "#b2ffff",
      "tab_line": "#b2ffff"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{de964c16-0c60-46a5-90f6-ad7b6bd3c842}"
    }
  }
}