Gods I love masks.

Of the many masks I've constructed (or attempted to construct) this one is the most popular. Designed after the plague masks from the 1350s (the black death world tour eras), done in a faux-linen with green glass lenses.

Origins around the plague masks were from the common belief that the plague was spread by demons. To prevent the demons from infecting the doctors, they wore beaked leather masks. The beask were stuffed with herbs to ward off evil spirits. Doctors also wore long thick coats and prodded the infected with long sticks, ironically, this prevented the fleas from getting to the doctors.

What most people don't know, is that the masks were originally made from white linen and a modified archer's hood. The white hood worn over a black coat was symbolic of the doctor's life succeeding over death. These color schemes come from a much older civilization that held the ideals of light, dark, and balance in a religious triptych. These three branches of their religion waned over the years, but one Dr. Paul Redgrave hypothesized the black rats that brought the plagued fleas into Europe were planed by the Black Robe sect of this religion and the combating doctors were from the White Robes. Hence the color scheme.
The hidden history of the world is so terribly fun to explore.