Emotion Color
Emotions are complex states of mind. They include physiological correlation, cognitive factors and social roles [60]. Emotions function provides an individual with energy in order to react to a behavior. Different types of emotions exist and the basic one cannot be breakdown. Basic emotions which are regarded as universal can occur even though there are different personal experiences and cultural variations. They can be identified solely through facial expression. The six types of basic emotions are happiness, surprise, disgust, anger, sadness and fear. Even though facial expressions are unintentionally expressed but can be controlled through practice [61]. Micheal [62] stated that the facial expressions reflect social signal and manifest one’s emotional states. Emotional states are manifested through facial expression and are commonly accompanied with color changes. These changes in color occur either with increasing or decreasing blood flow result rosiness or pallor. Colors play pivotal role for providing the viewer the information about the nature of objects. Any changes that occur to the objects are recorded by the observer. If the changes pertain to facial color then it must be linked to emotion. The correlation between emotion and color to human biology is verified. Parts of the colors can be redness (rosiness) or whiteness (pallor). There are varieties of colors to express emotion [61].