Pink Snow.

After February's yellow snowfall, Russian island of Sakhalin's now got pink snow:

Experts at the local meteorology centre said sand from neighboring Mongolia was to blame for this unusual natural phenomenon.
Before it arrived in Maritime, the cyclone passed Mongolia, where sand storms had been raging in the desert.

http://www.mosnews.com/news/2006/03/13/pinksnow.shtml (via Boing Boing)