Which iconic invention's brand color was specifically chosen because scientific research showed it was the most visible color from a distance, enhancing the product's primary safety function?

The world of inventions and scientific discoveries isn't just about functionality—it's also about presentation. Throughout history, inventors and companies have made strategic color choices that became iconic elements of their brand identity. These deliberate color selections often reflect psychological principles, practical considerations, or meaningful symbolism related to the invention itself. Test your knowledge about the fascinating intersection of color psychology and technological innovation!

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The bright yellow of Caterpillar construction equipment
The international orange of the Golden Gate Bridge
The Post-it Note's canary yellow, originally chosen by 3M
The safety yellow of the original Sony Walkman life jacket model, designed for water safety