Blue is the most preferred color by men. It can create feelings of calmness or serenity. Also feelings of being secure and orderly. But with some people, they feel sad and aloof. Research has shown people are more productive in blue rooms. That is why a lot of offices are this color. Although it is one of the most popular, it is the least appetizing. Some weight loss plans recommend eating off of a blue plate. Your pulse and body temperature can be lowered by the color blue.