Color represents, human visual characteristic through which we can see different specters of light. Color has huge impact on our every day perception of nature and objects around us. Every color has its own characteristics and impact in our eyes, whether is drawn on a canvas or paper, or digitally mastered or used for something else. When color is used properly it gives wonderful visual perception on everything is used for. Here is interesting video on You Tube made by GCFLearnFree.org for color usage.
Photo via Visual Hunt