I was inspired by an old photo of a member covered in their own blood after a lengthy play piercing session. Her finger tracing BME in the remaining drops and smears of blood across her body.
That's when I came across Sanguine.
Four temperaments is a theory of proto-psychology that stems from the ancient medical concept of humorism and suggests that four bodily fluids affect human personality traits and behaviors. The temperaments are sanguine (pleasure-seeking and sociable), choleric (ambitious and leader-like), melancholic (introverted and thoughtful), and phlegmatic (relaxed and quiet).
Sanguine or red chalk is chalk of a reddish-brown colour, so called because it resembles the colour of dried blood. It has been popular for centuries for drawing (where white chalk only works on coloured paper), and the term also describes a drawing done in sanguine. The word comes via French from the Italian sanguina.
san·guine 1. cheerfully optimistic, hopeful, or confident: a sanguine disposition; sanguine expectations. 2. reddish; ruddy: a sanguine complexion. 3. (in old physiology) having blood as the predominating humor and consequently being ruddy-faced, cheerful, etc. 4. bloody; sanguinary. 5. blood-red; red.