Lonely black rock

How can u mix a black rock into a bowl of white paint?
If its just a drop of black paint then slowly over time, it'll blend into one consistent mixture.
but what about a rock which is black to its core...
u may paint it white but it'll only be white on the outside
u may grind the rock into tiny powders
to the extent that when mixed, the consistency is of a smooth white colour
but then its no longer a rock
How?

what if I'm just a tiny speck of dust......not to the world............nor to the universe........................ but to u