Human color perception depends on the neural representation of the spectral properties of light reaching the eye. While a single wavelength has a characteristic color when seen against a dark ...

Today, the series continues with the arrival of K&B Drug Stores - and the chain's distinctive purple trademark color. THEN: It started with $500. That's how much Gus Katz and Sydney Besthoff each ...

Dozens of other stores followed. The pharmacy chain, whose name officially was shortened to K&B in 1977, became well-known for its purple-colored products and logo, which many people still refer ...