Which invention was deliberately given its distinctive yellow color not for aesthetic reasons, but because research showed it was the most visible color for improving safety and attention?

Throughout the history of technological innovation, brand colors have played a crucial role in how we perceive and remember groundbreaking inventions. Color psychology has influenced how inventors and companies present their discoveries to the world, often becoming inseparable from the invention itself. This trivia question explores a fascinating connection between a revolutionary product, its distinctive color choice, and the psychological strategy behind it.

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Post-it Notes (3M)
Sony Walkman
Polaroid OneStep Camera
Apple iMac G3