  We obtain local numerators satisfying the BCJ color-kinematics duality at one
loop for super-Yang-Mills theory in ten dimensions. This is done explicitly for
six points via the field-theory limit of the genus-one open superstring
correlators for different color orderings, in an analogous manner to an earlier
derivation of local BCJ-satisfying numerators at tree level from disk
correlators. These results solve an outstanding puzzle from a previous analysis
where the six-point numerators did not satisfy the color-kinematics duality.
