[jomamaxx]

"Does the existence of gray disprove the notion that black and white are colors?"

Black and White are colours.

People who we commonly describe as 'Black' are not the colour 'Black'.

Tell me - which Black person on planet earth is the 'definitive Black' which equates to '100%' Black.

Barack Obama is 'mostly Black' on one side, 'mostly White' on the other. But his father was from Kenya. Does this make his father 100% Black? Because there are much darker skinned people in West Africa.

Forget colour, it's confusing you. It's a metaphor we use, that is really quite useful colloquially, but not useful beyond that.

There is no such thing as 'perfectly Black' or 'White' genetically. It's just an array of genes. That's it.

There is strong correlation with some genes and some cultures. That's it.