Correct

灰蒙蒙

/ huīmēngmēng / 
Strokes

Definition

dusky/overcast (of weather)

Example

As an Adjective

dusky; overcast

1
Tiānsè
天色
biàn
变
de
得
huīmēngmēng
灰蒙蒙
de
的
  
。

The sky became overcast.

2
Sìzhōu
四周
jìn
尽
shì
是
huīmēngmēng
灰蒙蒙
de
的
nóngwù
浓雾
  
。

A thick grey mist was all around us.

3
Huīmēngmēng
灰蒙蒙
de
的
yèsè
夜色

dusky night scene