High Quality Content by WIKIPEDIA articles! The Constitution of the State of Colorado is the foundation of the laws and government of the U.S. state of Colorado. The current, and only, Colorado State Constitution was drafted 1876-03-14, approved by Colorado voters 1876-07-01, and took effect upon the statehood of Colorado on 1876-08-01. From 1876 through 2007, the Colorado Constitution has been amended 152 times.