Colors affect us in major but subtle ways. The way that color affects human behavior and mood is harder to test than the the other senses, such as taste and feel. Color psychology is the study of the way the visible spectrum affects us. Sadly the information gathered by studies is used mainly in marketing, branding and fashion. The potential use for this type of study is much higher than that.
Black, Red, Brown Or Gray
The crown chakra is represented by pink. Characterized as the gate to God or the universe the crown chakra is where unseen forces provide help, intentions, and sometimes test our resolve. Pink lovers delight in making others happy. They are naturally joyful and extremely positive.
source and courtesy: Spirit Science