Doctoral Hoods, like most graduation regalia, are steeped in tradition. Each color is significant. The purple on the tips signifies that the doctoral candidate is in the field of Law. The crimson and blue chevron pattern is for the University of Kansas.
I started with a single coat of Pure Ice Celestial (blue), then added the crimson chevrons in Pure Ice Crimson. I finished the design with Pure Ice No Means No (purple).