As loneliness is often described as a negative emotion, people feel as blue as they are supposed to be, while experiencing it.

孤独感通常被认为是一种消极情绪，这样的人感觉像蓝色以至于他们向往蓝色，甚至想去体验。

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It's tempting to shrug and wonder whether the legacy of new green initiatives will be as lackluster as the "green Olympics" - or to feel blue at the lack of promised "blue skies."

你不由得耸耸肩，心想新的绿色倡导会不会像“绿色奥运”一样雷声大雨点小——或由于没有实现允诺过的“蓝天”而让人心头一片灰蒙蒙。

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Forget the old saying, "blue and green should never be seen." Navy goes with everything, including green. Feel free to mix brown and black, too.

忘记古老的说法，“蓝色和绿色不应该同时出现”。海军蓝与任何颜色都搭配，包括绿色。棕色和黑色也可以搭配。

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Any Americans still uncomfortable on the red clay will feel more at home: For the first time, Madrid will be using blue clay, much like the color of the U.S. Open courts.

WSJ: Americans Produce Feats on Clay