What's Underneath Mar's Red Surface Unlisted Video

According to MNN.com, "For all the asteroids and comets that have slammed into its surface over the years, Mars has done a remarkable job of keeping its composure. Sure, it's got its share of scars — the planet's thin atmosphere makes it an easy target for space stones that don't break up before impact..." Unfortunately, a most recent impact has caused Mar's red color to turn black and blue.