Colo. Rev. Stat. § 5-3-205
A creditor may not use multiple agreements with respect to a single consumer credit transaction for the purpose of obtaining a higher finance charge than would otherwise be permitted by this code or to avoid disclosure of an annual percentage rate pursuant to the provisions on disclosure and advertising. Dividing a single consumer credit transaction between a husband and wife shall be presumed to be a violation of this section. The excess amount of finance charge provided for in agreements in violation of this section is an excess charge for the purposes of the provisions on the effect of violations on rights of parties contained in section 5-5-201 and the provisions on civil actions by the administrator contained in section 5-6-114.
C.R.S. § 5-3-205
This section is similar to former §§ 5-2-402 and 5-3-409, as they existed prior to 2000.