If the surface is light-colored one would use a carbon-based dark powder.
For medium brown hair, use a dark brown powder.
Bromopyrogallol red is a green to dark brown crystalline powder.
A dark powder on the ball, if you want to put a mark on a white surface.
Inside each one is some loose, shifting dark green powder.
He took the lid off and showed me a dark brown powder.
It is a fine black or dark brown powder.
He watched a woman sprinkle a dark powder into the waters from an upstream canoe.
He started to tip the dark powder into his filter.
It has the appearance of a dark red powder.