AGI on my 1040-SR, line 11 is a negative number. Taxable Income, line 15 is zero. On the CO return, line 1 should be the amount from 1040-SR line 15. However, it is the AGI minus the deductions (1040-SR line 11 minus 1040-SR line 12).
I see no way to override line 1 on the CO State return.