The "user-color-map" setting:

The user-color-map setting can be used to override user color choices. The setting is a list of space-separated words pairs. The first word of each pair is a login name. The second word is an alternative name used by the color chooser algorithm.

This list is intended to be relatively short. The idea is to only use this map to resolve color collisions between common users.

Visit /hash-color-test?rand for a list of suggested names for the second word of each pair in the list.