For the South Hemisphere and tropical countries it is not even cold, so white Christmas happens only on TV, movies and books…

… and Firefox. Here are three beautiful themes to make it snow on your desktop.

Xmas, by Matt Coxwell, my current favorite. It is an experimental theme so you will need a Mozilla Add-ons account to get the cute snowy roofs.

Tinseltown, another classic theme by Twister Mc.

Winter Holiday Christmas, developed by Brand Thunder, is technically an extension that includes a useless toolbar with links to Amazon, a few Last.fm stations, and evite. At least you can hide the toolbar and keep the well done theme.

Enjoy!