C.R.S. § 4-9-327

The following rules govern priority among conflicting security interests in the same deposit account: (1) A security interest held by a secured party having control of the deposit account under section 4-9-104 has priority over a conflicting security interest held by a secured party that does not have control. (2) Except as otherwise provided in paragraphs (3) and (4) of this section, security interests perfected by control under section 4-9-314 rank according to priority in time of obtaining control. (3) Except as otherwise provided in paragraph (4) of this section, a security interest held by the bank with which the deposit account is maintained has priority over a conflicting security interest held by another secured party. (4) A security interest perfected by control under section 4-9-104 (a)(3) has priority over a security interest held by the bank with which the deposit account is maintained.