Green creates feelings of comfort, laziness, relaxation, calmness. It helps us balance and soothe our emotions. Some attribute this to its connection with nature and our natural feelings of affiliation with the natural world when experiencing the color green. Yet, darker and grayer greens can have the opposite effect. These olive green colors remind us of decay and death and can actually have a detrimental effect on physical and emotional health. Note that sickened cartoon characters always turned green.