I could be brown, I could be blue, I could be violet sky.

我可以是棕色，我可以是蓝色，我可以是紫色的天空。

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She wore one of his shirts, a shirt that had once been blue but had faded until the color could not be named, and a pair of his breeches.

她穿着他的一件衬衣，这件衬衣曾经是蓝色的，但已经褪得说不上是什么颜色了，还穿了他一条马裤。

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In fact, from Ale's point of view, this could be a blue hat.

事实上,从艾尔的角度看,这很有可能是顶蓝色的帽子

耶鲁公开课 - 博弈论课程节选

Eliza's technology also could be used in Blue Gene, IBM's supercomputer under development and aimed for biotechnology research.

FORBES: Magazine Article

If GDX tops this area and moves to all-time highs, traders could be capitalizing on a blue sky move.

FORBES: Time To Get Gold And Oil

Could blue eyes be another example of the same phenomenon "culture-gene co-evolution"?

WSJ: Matt Ridley on Human Culture's Effect on Genes | Mind & Matter