Exile at Dawn — Stuart Fox

Exile at Dawn is a novel set in the near future. A rogue scientist altered the human genome and created a different type of human, called Greens, who have been moved to an internment camp. Teenagers Tom and Gloria find romantic love as they struggle to free their people, who pose a threat to the continued existence of our species. They become Green leaders and must combat powerful politicians to prevent mass extermination and devise a positive role for the Green people. The future of all humanity is at stake when Tom's sister Lilly has an affair that threatens imminent genocide of the Greens.