The Department of Homeland Security is planning to get rid of the color-coded terrorism alert system. Known officially as the Homeland Security Advisory System, the five-color scheme was introduced by the Bush administration in March 2002.

Red, the highest level, meant “severe risk of terrorist attacks.” The lowest level, green, meant “low risk of terrorist attacks.” Between those were blue (guarded risk), yellow (significant) and orange (high).

The nation has generally lived in the yellow and orange range. The threat level has never been green, or even blue.
..

Conan O’Brien joked, “Champagne-fuchsia means we’re being attacked by Martha Stewart.” Jay Leno said, “They added a plaid in case we were ever attacked by Scotland.”

U.S. to Drop Color-Coded Terror Alerts