Color psychology is the study of hues as a determinant of human behavior. Color influences perceptions that are not obvious, such as the taste of food.
It can also work as placebos by having the pills be certain colors to influence how a person feels after taking them. For example, red or orange pills are generally used as stimulants.
Another way in which color psychology have been used to influence behavior was, in 2000, when the city of Glasgow installed blue street lights in certain neighbourhoods which resulted in a reduced crime rate.
Color can indeed influence a person, however it is important to remember that these effects differ between people. Factors such as gender, age, and culture can influence how an individual perceives color. For example, males reported that red colored outfits made women seem more attractive, while women answered that the color of a male's outfit did not affect his attractiveness.
Color psychology is also widely used in marketing and branding. Many marketers see color as an important part of marketing because it can be used to influence consumers' emotions and perceptions of goods and services. Companies also use color when deciding on brand logos. These logos seem to attract more customers when the the brand logo matches the personality of the goods or services, such as the color pink being heavily used on Victoria's Secret branding. However, colors are not only important for logos and products, but also for window displays in stores. Research shows that warm colors tended to attract spontaneous purchasers, despite cooler colors being more favorable. (Source Wikipedia)
Take this quick quiz to find out how color choices affect your personality