Sicily's Mount Etna early this week, as seen from space. The bright red is lava. Snow is blue-green. Clouds are white. "Shortwave infrared, near infrared, and green light" combine to produce the colors. NASA hide caption toggle caption NASA The Two-Way Pretty Picture: Mount Etna Boils Over; NASA Adds Color To Shot From Space February 21, 2013 A satellite image combining infrared, near infrared and green light produces a colorful combination. The volcano has been blowing off steam, and lava, this week.