Black and White
In terms of light frequency (additive colour theory), white is the presence of all colours and is therefore a colour in itself. Black is not; without light everything is black. However, when thinking about color in terms of physical pigments (subtractive color theory), like paint, the tables turn; white is not considered a color while black is the presence of all colors.
Lisbon's monochrome cobbles and tiles snake their way around the city, presenting an invitation to gaze downwards around almost every corner. Likewise, the irresistible light and shade of traditional Fado music steeps the city in emotion through eerie, expressive song,
Photo below left: @mari_boo