Colorado (, or ) (Spanish for "ruddy") is a U.S. state encompassing most of the Southern Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. Colorado is part of the Western United States, the Southwestern United States, and the Mountain States. Colorado is the 8th most extensive and the 22nd most populous of the 50 United States. The United States Census Bureau estimates that the population of Colorado was 5,456,574 on July 1, 2015, an increase of 8.50% since the 2010 United States Census.

17th Street/Santa Monica College (formerly Sunset) station is an at-grade light rail station in the Los Angeles County Metro Rail system located near the intersection of 17th Street and Colorado Avenue in Santa Monica, California. When it re-opens, this station will be served by the Expo Line.

Downtown Santa Monica (formerly Santa Monica) station is an under-construction at-grade light rail station in the Los Angeles County Metro Rail system. It will be located near the intersection of 4th Street and Colorado Avenue in Downtown Santa Monica, California. When it opens, this station will be served as the Expo Line's new terminal station. On that day, 4th/Colorado will become the western terminus of the Expo Line and the westernmost station in the Metro Rail system.