This link will take you to the Colorado License Recognition info. http://www.dora.state.co.us/real-estate/licensing/recognition.htm
It appears that you already know that Colorado and Arizona have no recognition. If the two states do not have recognition than you need to start from scratch under most circumstances. Colorado allows online training as long as the school is on the approved list. http://www.dora.state.co.us/real-estate/licensing/education/
The only other way around this is if you have a degree from an accredited degree-granting college or university with a major course of study in real estate. Another suggestion would be to call the Colorado Real Estate Commission and ask the questions so that you can hear from the horseâ€™s mouth so to speak.