Mold is usually green, white, black or gray.

霉菌通常为绿色、白色、黑色或灰色。

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This here's a new bit, and he touched a shoot which looked brownish green instead of hard, dry gray.

这是新的一点，他摸了摸一根嫩芽，它看上去是带褐色的绿色，而不是干硬的灰色。

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Color: black, gray, green, blue and so on.

色泽：黑色，灰色，绿色，蓝色等。

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The men knew it was the middle of the day because the color of the sea changed from slate gray to emerald green, with gold lights.

VOA: special.2011.04.09

They're beautiful: pumpkin claws and green legs clouded by a veil of gray speckles.

VOA: standard.2010.07.20

In a series of five studies, about 150 heterosexual men (homosexual men and those with red-green color blindness were excluded) rated photographs of women framed in red, white, gray, green, or blue, or with the woman in a red or blue shirt.

CNN: Wearing red may boost your sex appeal

The gray-green knitted blob next to the sofa seemed larger than it had that morning.

NEWYORKER: Brooklyn Circle

It consists of five color panels, a gradation of muted shades that move from gray to green to blue.

WSJ: The Polaroid SX-70 as Sexy Tech | Frances Lehman Loeb Art Center | By Richard B. Woodward