It depends, do you think brown is perfect?
yellow
Yellow over Black Background!
by adding 4 drops golden yellow colour +1 drop brown colour + 1/8 drop black colour = perfect mustard colour
black and yellow
You could get a mossy green colour (colour of the bag below) though it can change depending on how much yellow you put in.
It's one of the colour. Black colour absorb all colour. A perfect black body radiates heat.
yellow - voilet - brown or yellow - voilet - black - black
yellow
black and yellow
Yellow and black.
yellow blue and black
black and yellow