I suggest: the hair can be brown, black or dark gray.

我建议：黑发的可以用棕色、黑色或黑灰色。

youdao

White/black (or dark gray) is the typical color scheme of minimalist Web designs, but others use different colors to achieve the same goals.

白色/黑色（或深灰色）是极简网站设计中典型的配色方案，但也有人使用不同的颜色来达到同样的目标。

youdao

Beige, which is similar to camel, can be paired with cool fall or winter colors like black, gray, blue and even dark brown to achieve the same magical effect.

和驼色相近的米色搭配起秋冬的冷色服饰，如黑色、灰色、蓝色甚至深棕色，都可以达到一样神奇的效果。

youdao

The researchers say Anchiornis huxleyi appeared to have a dark gray or black body.

VOA: special.2010.03.16

Most wore black or other dark colors under a sky of cloudy gray.

CNN: Poll: Few Americans think U.S. is winning war on terror

Back home, they had to deal with an utterly flat landscape laced by rivers and canals much of it below sea level, reclaimed by dikes forever loomed over by dark gray clouds, damp mists, and rain or snow.

WSJ: de Young Museum: More Than Just the Girl