Marketplace illumination methods and apparatus

A method of providing illumination in a marketplace, comprising:

• a) illuminating at least one article in the marketplace with variable color light from a plurality of LEDs, the marketplace comprising a consumer environment configured for the sale or purchase of goods or services, the plurality of LEDs comprising a first LED providing a first output having a first spectrum and a second LED providing a second output having a second spectrum, the first spectrum being different than the second spectrum;
• and
• b) independently controlling at least one of the first output and the second output so as to vary a spectral content of the variable color light,
• wherein the step b) comprises a step of independently controlling at least one of the first output and the second output (i) in response to at least one sensed condition, (ii) based on a time of day, or (iii) based on ambient light in a vicinity of the at least one article.

A method of providing illumination in a marketplace, comprising:

• a) illuminating at least one article in the marketplace with variable color light from a plurality of LEDs, the marketplace comprising a consumer environment configured for the sale or purchase of goods or services, the plurality of LEDs comprising a first LED providing a first output having a first spectrum and a second LED providing a second output having a second spectrum, the first spectrum being different than the second spectrum;
• and
• b) independently controlling at least one of the first output and the second output so as to vary a spectral content of the variable color light,
• wherein the step b) comprises a step of independently controlling at least one of the first output and the second output in response to at least one action of a customer viewing the at least one article.