If you look at the work of some of the master portrait photographers, you'll notice that much of their work tries to keep the use of color very minimal. Why? Portraiture is a type of photography that involves putting an emphasis on a person or thing and when the colors in the scene are very complicated, the scene can be distracting to the viewer.
In fact, specific films were developed to create better skin tones and colors for portraiture. Some of the best from Fujifilm were Astia and Fujifilm Pro400H. . thephoblographer.com