greyscale
n. 灰度级；灰度等级
例句
I've printed out the pictures in greyscale.
我已经用灰色调打印出图片。
《牛津词典》
"Garin's Curse is only greyscale," said Tyrion.
“加林的诅咒只是灰死病而已，”提利昂说。
All the hotties have a plain background, the most popular being white and greyscale fades.
上面这些网站都有一个朴素的背景，最流行的就是白色和灰调渐变。
