JSYK: 7 Ways Colorism Impacts Black Americans (Patreon)

It's more than just "preference". 

References

A Comparison of Skin Tone Discrimination Among African American Men

Dark Skin Vs Light Skin: The Battle of Colorism In The Black Community (Jaleel Campbell)

Paper Bag Test: Letter From 1928 Addresses Black Fraternity And Sorority Colorism At Howard University

What Is Colorism- Skin Tone Discrimination In America (Nadra Kareem Nittle)

The Persistent Problem of Colorism: Skin Tone, Status, and Inequality (Margaret Hunter)