Which color psychology strategy is most commonly employed by major publishing houses for literary fiction book covers in the last decade?

Book cover design is a crucial aspect of publishing that combines art and marketing psychology. Colors on book covers are carefully selected to evoke specific emotions and attract target audiences. Different genres often employ distinct color palettes - romance novels frequently use reds and pinks, thrillers favor dark blues and blacks, while literary fiction might use more subdued tones. This trivia question explores how major publishing houses leverage color psychology in their visual branding strategies.

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Muted, desaturated colors to convey sophistication and literary gravitas
Bright primary colors to stand out on digital platforms and physical shelves
Black and white photography exclusively to distinguish from genre fiction
Metallic foil elements (gold, silver) on at least 60% of the cover surface