Nutcracker Suite

From Neurology.org's Cyber Museum, Nutcracker Suite is described by its donor Dr Wallace B. Hamby:

"This tableau was carved and assembled in 1955 and served as a centerpiece on the Banquet table when Dr. W. James Gardner was inducted as President of the Society of Neurological Surgeons in Chicago.

"Originally conceived as a caricature of my operating suite at the Buffalo General Hospital, it includes two of Dr. Gardner's innovations: surgery in the sitting position, adopted from Dr. Th. DeMartel of Paris, and the first use of colored linen in the operating suite, introduced to improve the quality of color photography."

So that's why scrubs are blue and other colours - more photogenic!