Golden Boy by Tara Sullivan

Habo steps from one hell into another when the white-skinned, yellow-haired, light-eyed boy joins his family on a trip across the Serengeti. Abandoned by his dad and ridiculed or avoided by everyone but his sister, Asu, Habo knows he's the reason his family has to move. When his frightened aunt welcomes the family to Mwanza, Habo learns he's Albino; and Mwanza locals believe that Albinos' body parts brought good luck.