C.R.S. § 15-16-905

(1) This part 9 applies to a trust created before, on, or after August 10, 2016, which: (a) Has its principal place of administration in this state, including a trust whose principal place of administration has been changed to this state; or (b) Provides by its trust instrument that it is governed by the law of this state or is governed by the law of this state for the purpose of: (I) Administration, including administration of a trust whose governing law for purposes of administration has been changed to the law of this state; (II) Construction of terms of the trust; or (III) Determining the meaning or effect of terms of the trust.