Mold is usually green, white, black or gray.

霉菌通常为绿色、白色、黑色或灰色。

youdao

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。

youdao

youdao

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