B/LACK

Black is beautiful
The colour black is considered by many as a simple expression of darkness and gloom, indeed as a non-colour or the mere absence of light. In actuality however, like no other colour it stands for entire conditions of the soul, for the immense wealth of cultural-historical connotations, which evokes the most opposing of associations: Malewitsch's black square, a black hole, black riders, the black widow, black magic, black sheep, black box or black beauty - black stands for the traditional and the modern, for reduction and for opulence, for deprivation and for exoticism, for eccentricity and for elegance, for gravity...

and sadness, and for inscrutability and depth. It is thus a non-colour especially  that demands that we take a particularly intense look at the complexity of our perception of colour.