Colors of the Night — Peter H. Zindler

This is action-packed science fiction novel that is the sequel to the awarding-winning novel, Spirit Warrior. Defending freedom in the Blue Ring Galaxy, Vying is falsely accused of murder while on a military mission. He is sentenced to the prison planet of Zartex and must fight in the Battle Ring to gain his freedom from incarceration. Intrigue, romance, betrayal, and no-holds-bared fighting present this high adventure story.