Wassily Kandinsky found that certain shapes, such as triangles and circles, were more often associated with particular colors. But the subsequent research has had trouble replicating these findings. In this Psychology Today blog entry, chosen as an “essential read,” Carleton University associate professor Jim Davies describes the different findings, including poll results done in his own class, Mysteries of the Mind.
http://www.psychologytoday.com/blog/the-science-imagination/201401/whats-the-best-color-triangle