In essence, quantum dots are used to change the colour of the light.

本质上而言，量子点是用来改变光线的颜色。

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By changing the structure of such a crystal slightly, using an electric charge, the colour of the light reflected by that crystal will change too.

依靠轻微得改变晶体的结构，利用电流的改变，当晶体改变时，光的颜色也会相应改变。

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Combining red, green and blue LEDs to produce white light has the potential to be more efficient, and the colour of the light could be tuned depending on mood or taste.

结合红绿蓝led一起生成白光有能被更有效利用的潜在可能，并且光的颜色还可以依据心情或者口味来调配。

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The colour of the sea changes as the light advances up the sky.

BBC: Sardinia, land and sea

He could detect shallower water by colour, and see the light of invisible lagoons reflected in the undersides of clouds.

ECONOMIST: Mau Piailug

Oldman is sporting a pink shirt, his Commissioner Gordon moustache (he is currently filming the latest Batman movie, The Dark Knight Rises) and a pair of heavy-framed, light brown glasses, which match the colour of his hair.

BBC: Gary Oldman's Smiley: 'A little sexier, a little crueller'