The colored lighting apparently helps influence the brain's production of melatonin which is linked to the body's transitions between feeling awake and feeling sleepy.

很显然，彩色照明会影响大脑褪黑激素的分泌，而褪黑激素与身体的觉醒和渴睡阶段的过渡有联系。

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With special lighting effects, they became invisible and their brightly colored puppets took over the stage.

VOA: special.2009.09.23

From colored lighting and ambient music to digital art (on your TV), temperature, window blinds and specially designed mood-enhanced wake-up calls (like "wake me gently" or "wake me wildly"), you can direct the room's whole look and feel, all without having to get out of bed.

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But if you pressed your face to the glass, as Kendall was doing, you could see the biscuit-colored beach running down to Navy Pier, where they were just now lighting the Ferris wheel.

NEWYORKER: Great Experiment