That is ridiculous, but it appears that CO isn't the only one, per this article.
"Colorado has passed Proposition 113, joining the National Popular Vote Interstate Compact, which is an agreement to give all of a state’s electoral votes to the winner of the national popular vote. Colorado currently controls nine electoral votes.
The Centennial State joins 14 other states and the District of Columbia in enacting the proposition into law. Other states that have joined the compact include California, Connecticut and Maryland.
As the nonprofit group National Popular Vote
reports, the jurisdictions that have enacted Proposition 113 into law account for 196 electoral votes.
The proposition would go into effect when states that have a total number of 270 electoral votes pass such a measure."
I vaguely remember there was a dust-up about this in 2020 or thereabouts as it was perceived that it was collusion among certain states to keep democratic control and subvert the intentions of the Constitution.