You can see the new, tiled, background image for my Twitter account.  The multicolored bonanza of triangles and primary colors is mesmerizing and aesthetically pleasing, right?  Or is the image effect sort of eye numbing and hard on the retinas?  Did you notice the twitter logo shares the same color blue as my background image?  There’s nothing to that shared hue of blue except that “it is the color that it is” — which is a complicated way of saying, “it’s a popular primary blue.”