This discussion is interesting because it strongly parallels real-life issues.
Chemical photography was plagued by this very problem for many years. Light skin was treated as the baseline when formulating and using color chemistry, and it wasn't until (this is not a joke) complaints from the chocolate and furniture industries piled up that they set about formulating films that were better for dark/brown tones. Kodaks calibration cards that were distributed to labs didn't even have multi-racial representation until the mid 90's, right before consumer usage of color films was about to become a thing of the past.
Modern developers would certainly benefit from creating the digital equivalent of a shirley card.