It depends on how long you stay in Colorado. You are a domilciliary resident of Texas. That is where your main home is. However, if you reside more than 6 months in the home that you have in Colorado, you are considered a statutory resident of Colorado. Here's a link to a Colorado publication that has more information on this:Income 6: Part-Year Resident and Nonresident ... - Colorado.gov
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Q. What about if you lived and worked in Colorado but you begin working in Texas later in the year and are in the process of moving?
A. You are still a CO resident until you establish a permanent residence in TX. Permanent residence is when your whole family arrives in TX, to stay. You will file a part year resident return for CO, including the TX income that was received while you were still a CO resident.