Which innovative retail display strategy, first implemented by Barnes & Noble in the early 2000s, was found to increase fiction sales by 17% by arranging book covers by color instead of author name?

In the competitive world of publishing and bookselling, color psychology plays a crucial role in how books are marketed and displayed. Publishers carefully select book cover colors to evoke specific emotions and attract target readers. This trivia question explores a fascinating retail innovation that revolutionized how bookstores arrange their merchandise to maximize sales based on color psychology research.

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The Rainbow Wall (creating visually striking displays of books arranged in color spectrum order)
The Blue Zone Strategy (placing blue-covered books at eye level based on trust psychology)
The Red Corner Concept (using red-covered books as attention-grabbing end caps)
The Contrast Method (alternating dark and light covered books to create visual rhythm)