I totally swiped this right off Wikipedia. It's the Hartman Psychological Color Code--
(So disclaimer here I don't believe people fit into boxes this small but whatever!!)
Classify the Motive TypesThe driving core motives are classified into four colors: Red, the power wielders; Blue, the do-gooders; White, the peacekeepers; and Yellow, the fun lovers. It is a creative way to simplify this system for your understanding and use. This simplification sometimes causes people not to take the Color Code seriously, however, that is a mistake. The Color Code at first glance represents a fraction of the whole. Hartman believes the system is simple and at the same time profound.
Others are not so sure. As Nietzsche said, "What labels me, negates me."
Reds: The Power WieldersReds are the power wielders of the world. Reds use logic, vision and determination. From a Red perspective, emotion has nothing to do with completing tasks.
Red Strengths It is an ego problem which causes intolerance of others’ ideas. They are also timely.
Red Limitations They are demanding. Reds lack compassion. If they develop the gift of compassion, Reds are hard to beat.
Blues: The Do-goodersLife is a sequence of commitments for blues. They thrive on relationships and willingly sacrifice personal gain. Blues are highly demanding perfectionists. They can be distrusting and worry prone. They are complex and intuitive and can be very opinionated. Blues can also be emotional and moody. Blues can be self-righteous and insecure and can also be very self disciplined and sincere.
Blue Strengths Blues are steady, ordered and enduring. Blues love with passion. They bring culture and dependency to society and home. They are highly committed and loyal. They are comfortable in creative environments. They strive to be the best they can be.
Blue Limitations They are insecure and judgmental. Lacking trust they find themselves resentful or unforgiving.They often fail at seeing the positive side of life. They want so badly to be loved and accepted, constantly seeking understanding from others while often refusing to understand and accept themselves.
Whites: The PeacekeepersMotivated by Peace, Whites will do anything to avoid confrontation. Their only demands from life are the things that make them feel comfortable. That feeling fosters their need to feel good inside.
White Strengths Whites are kind, considerate, patient and accepting. They are virtually devoid of ego. They are good at constructing thoughts that did not exist before, just from careful listening and taking time to think things through.
White Limitations Whites don’t commonly share what they are feeling, understanding or seeing. They won't express conflict. Whites may be unwilling to set goals. They dislike working at someone else’s pace. They can be very self-deprecating.
Yellows: The Fun LoversYellows are motivated by Fun. They are here to have a great time.
Yellow Strengths Yellows are enthusiastic. They are very persuasive. They are spontaneous in nature. They are always looking for something new to do.
Yellow Limitations They develop friendships with ease but can be very self-centered. They often have lots of friends but on a superficial level. Their self-centered nature blocks them from forming meaningful relationship.