Except for reasonable expenses incurred in realizing on a security interest, the agreement with respect to a consumer credit transaction may not provide for charges as a result of default by the consumer other than those authorized by this code. A provision in violation of this section is unenforceable.
C.R.S. § 5-3-302
This section is similar to former §§ 5-2-414 and 5-3-405, as they existed prior to 2000.