This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Note: Since Firefox 58, this media feature is no longer available to web content — it is only available internally (e.g. to XUL / chrome code). See bug 1396066 for more details.

The -moz-windows-theme Gecko-only CSS media feature is useful for customizing application skins and other chrome code to work well with the user's Windows theme.


The -moz-windows-theme feature is specified as a keyword value that Indicates which Windows theme is currently being used.


  • aero
  • luna-blue
  • luna-olive
  • luna-silver
  • royale
  • generic
  • zune

Media: media/visual
Accepts min/max prefixes: no

See also