chromoclasm
The elimination or reduction of colorfulness for religious reasons.
uncountable
The preference for sombre, dark clothing does not only reflect "bourgeois" values, but also what Pastoreau characterises as the "chromoclasm" or "war against colour" being an important dimension in the new Christian morals of Protestantism - in fact, Pastoureau actually links this "chromoclasm" explicitly to the distinct cultural opposition between black and white and colour in cinema.
Where it comes from
Coined by Michel Pastoureau as Blend of chroma + iconoclasm
Adapted from the Wiktionary entry chromoclasm (CC BY-SA 4.0).