The question is, where is your domicile? Your domicile is the place you call home. It is the place where you have significant family, social, and business ties. Such as, your pharmacy, your doctor, your attorney, your voter registration, your library card, your favorite mechanic, your church, and so on. You can be traveling and not own a house or have an apartment lease, but still have a domicile, probably where you most recently lived. You only ever have one domicile at a time, no matter how many residences you might own.
As @SteamTrain suggests, your domicile was probably Colorado even though you sold your home and were traveling. Colorado will certainly assume that your domicile was Colorado and that you owe full year income tax, unless you can show that you established a domicile elsewhere.
