The American Council on Education's Academic Costume Code lists the colors allocated to the various fields of learning that have been largely standardized by the Intercollegiate Bureau of Academic Costume.
The website also provides a historical overview of the Academic Costume Code.
The University of Colorado Anschutz Medical Campus uses the following colors for its hoods and tassels. All robes are black:
Bachelor of Science in Nursing - Apricot
Master of Science in Nursing - Gold
Master of Science / Master of Clinical Science - Gold
Master of Public Health - Salmon
Doctor of Public Health - Salmon
Doctor of Nursing Practice - Apricot
Doctor of Pharmacy - Olive Green
Doctor of Dental Surgery - Lilac
Doctor of Medicine - Forest Green
Doctor of Philosophy - Royal Blue Hood & Old Gold Tassel