Why did the moon turned a rust color last Night?

Last night there was a total lunar eclipse that was visible to a large portion to North America. The moon was obscured by the earth's shadow for about 2 hours. The sky was very black except for the red glow that shown where the moon usually shines. It was the unusual red color that caught my attention. Why was it red?
It all has to do with light. During a total lunar eclipse the moon is in the behind the Earth in its shadow. The Earth blocks direct sun light from the reaching the moon. usually we can see the moon because of this sunlight that hits the moons surface reflecting light and its gray color back toward us to see. The moon does not emit light itself, so by taking away this direct sunlight we don't see it would normally appear.
Although the moon doesn't receive any direct sunlight, it still is lit by the indirect light that passes through the Earth's atmosphere. The Atmosphere acts like a filter and removes most of the blue color light leaving the deep red color. (mr eclipse.com)



sources:
http://sunearth.gsfc.nasa.gov/eclipse/lunar.html
http://www.mreclipse.com/Special/LEprimer.html