When Penguin Books first introduced their famous orange-and-white color scheme for their paperback covers in 1935, what was the original purpose behind this distinctive design choice?

The publishing industry has created some of the most iconic logos in the retail world. These symbols not only represent publishing houses but often become cultural touchstones for readers worldwide. Among these, the Penguin Books logo stands out as one of the most recognizable in literature. Test your knowledge about the evolution of this famous publishing brand's visual identity and how it has influenced book marketing and consumer perception.

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To differentiate various literary genres (orange for fiction, green for crime, etc.)
To match the color scheme of London's underground transit system where they initially sold books
To use the cheapest printing inks available during the Great Depression
To honor the University of Oxford's academic colors, where founder Allen Lane studied