Tho I've taken artistic license with some of them.
Freedom of speech and free artistic license are of the utmost importance, but you also wouldn't want to put any faculty members in a compromising situation.
Many times the designers will create the jewelry with a touch of artistic license to give the piece a unique modern-meets-antiquity style.
Authors of historic fiction are able to take some degree of artistic license with the periods in history about which they write, as long as they don't attempt to rewrite the course of history.
The artistic license taken in the series is similar to that of True Blood which has veered from the Sookie Stackhouse novels upon which it is based.