Magoi of the Star
An esoteric mystery cult of astrologers, who claim to be inspired by the Magoi of the Star who visited Jesus at the Nativity. This group, like all mystery cults listed in The Mysteries Revised Edition, is not strictly Canonical and may or may not exist in your saga. The Cult is organised in to seven degrees of initiation each with its own colour robe worn at their rites; the Degree of Saturn (black), the Degree of Jupiter (deep blue), the Degree of Mars (red), the Degree of Venus (emerald green), the Degree of Mercury (orange), the Wise Ones (silver), and the three Heirophants.
References
The Mysteries Revised Edition introduces the Magoi and describes their history and organization on pages 54-56.