You can add additional colors to a locker in a bulk fashion through HomeField Locker Manager's product list.
To get started select items already available in the store from products list in the Locker Manager details. The items you select should be the styles you wish to add additional colors in. You can select one or multiple styles all at once.
With the styles selected choose the bulk action of "Bulk Add Colors"
Note: If two items in the store are the same style in different colors, and both are selected to bulk add colors, the system will recognize them as the same style and only add additional colors once.