C.R.S. § 15-10-606

(1) This part 6 applies to: (a) An estate existing before, on, or after August 10, 2011; and (b) Proceedings to determine the reasonableness of compensation and costs commenced on or after August 10, 2011. (2) This part 6 does not apply to proceedings to determine the reasonableness of compensation and costs commenced before August 10, 2011, unless the court determines that the application of this part 6 would not prejudice the rights of any party to the proceeding and the court directs otherwise.