Can represent moods, feelings, or a sense about the object or situation where the color appears.
Colors that stand out (not just the various colors of the dream setting) can be very important symbols. For instance, a person wearing all black can mean your subconscious is portraying them as sad or mourning a loss, or as very formal in their manner or style.
Consider also the hue and brightness of the color. For example, a bright green could represent something different from a drab green, or a pastel green. See also the specific color name.