In Exiles of ColSec, Hill encourages racial harmony through the diversity of the heroes and their attempts to understand the culture of the Klydor aliens.

Equality of the sexes is stressed by the active roles played by the girls, Heleth and Samella. Nor are the male characters stereotyped. Cord is a thoughtful hero who would rather resolve conflicts through reason than through fighting. The book does contain violence that younger readers may find disturbing. But Hill does not dwell on violence, and many readers will find his descriptions of fights between characters and the deaths of monsters merely realistic rather than excessive.