According to this quiz, this is the definition of those with blue brains:
At work or in school: I like to be with people, sharing with them, inspiring them, and helping them. I work and learn best when I can take into consideration people and the human element. I flourish in an atmosphere of cooperation.
With friends: I always look for perfect love. I am very romantic, and I enjoy doing thoughtful things for others. I am affectionate, supportive and a good listener.
With family: I like to be happy and loving. I am very sensitive to rejection from my family and to family conflicts. I really like to be well thought of and need frequent reassurance. I love intimate talks and warm feelings.