Color Psychology is pretty much how colors effect a person's emotions and feelings. There are different types of color psychology such as cool colors, warm colors, and even colors used in marketing and advertising. Cool colors are colors such as blues, purples and variations of those colors. Those colors are known to be relaxing and help keep people calm and lower the heart rate. Worm colors are colors such as reds, yellows, oranges, and other vibrant colors. These colors are known to increases heart rate and cause hunger. So many restaurants like McDonald's uses yellows and reds to keep the customer hungry. The colors white, black, gray, green, brown, and pink also have meanings and strike different emotions. White usually represents purity, innocence, and cleanliness. While Black represents power, evil, strength, and intelligence. Gray represents neutrality and green represents growth, money, health, and envy. The color brown has a lot of meanings including but not limited to stability, friendship, sadness, comfort, and security. The color pink should be fairly obvious to most people, it represents romance, love, calm, and gentleness.
A more detailed explanation of Color Psychology can be found
here.
Color Psychology can also affect non-profit organizations shown by a study performed at the university of South Florida and written by Claire Sellus. Colors are an important part of communicating messages and trying to persuaded people. Many organizations use color psychology to create awareness and use it as symbolism for the cause they are trying to support. Results have proven that colors used in communicating messages helped to support the cause and back it up even more than using certain colors.
More info on this can be found at
http://scholarcommons.usf.edu/etd/1763/.