Which publishing house first popularized the use of a signature color scheme as a branding strategy, creating the iconic 'Penguin Orange' that revolutionized book cover design?

In the publishing world, strategic color branding has become a powerful marketing tool that shapes reader recognition and creates instant visual association with literary works. One publishing house pioneered this approach to remarkable success, creating a distinctive visual identity across multiple bestsellers that other publishers soon tried to emulate. This trivia question explores how color psychology and brand consistency transformed book marketing in the modern literary marketplace.

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Penguin Books
Random House
HarperCollins
Simon & Schuster