On June 7, the Colorado Secretary of State determined that the Unity Party has the needed 1,000 registrations to become a qualified party. See this press release from the Secretary of State’s office.
Colorado won’t keep track of the number of registered voters in unqualified parties, unless that unqualified party had previously placed a statewide nominee on the ballot. The Unity Party nominee for U.S. Senate petitioned onto the 2014 ballot, and also the 2016 ballot, so it had the right to a tally.
The only other parties that have become ballot-qualified in Colorado by this method have been the Libertarian, Green, and Constitution Parties. Several other qualified minor parties in the past got on by the alternate method of collecting 10,000 signatures. The most recent instance was in 2011 when Americans Elect qualified. Thanks to Independent Political Report for this news.