Personal Color

Many believe every single slut has her own personal color, such as cyan or mauve, even if she isn't consciously aware. Others believe only sluts destined to be exceptionally special to You have a personal color which is precisely unique to them, and together they form a prismatic pattern.
  This idiosyncratic hue is often reflected in her soul or other supernatural qualities. The color almost surely her favorite, and likely colors at least part of her body—such as hair, eyes, nails, lipples, or kiss marks. It informs the primary aesthetic of her favorite outfits. In games it is almost surely the text color of her dialogue.