I can't find anything that comes straight out and addresses this specific situation. But from everything I read in the CO tax regulations, you are a full time CO resident until you establish residency outside of Colorado, and that residency has to be established in accordance with the residency requirements of the location where you establish that new residency.
It's also noted in a few of the regulations that I read that the requirements you meet for residency outside of CO must be those requirements required for tax purposes if that location so defines requirements for such. For example, residency requirements for a college to offer a student in-state tuition rates are rarely the same as those requirements for state tax purposes.
