If you maintain your permanent residence in Colorado and travel seasonally for temporary jobs, your state of residence remains Colorado and you would report all of your income on your Colorado return. You will also file nonresident state returns for any state in which you had earnings or other income above the threshold for that state's filing requirement or in which you had taxes withheld from earnings.
See this article for more information on income and filing in multiple states.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"