UPDATED!
The keen-eyed out there will correctly identify this as the top of my head.

I know it's a sight some don't get to see that often, being as it is roughly 6'3" off the ground.

The reason I bring it into conversation is that today my hairdresser (I've never felt comfortable around barbers, for some reason, so for years I've been coiffured by women. My current is Chris, a Chinese Malay woman who tends to engage me in conversations about Premiership football) said I was going grey.

I strongly disputed this, saying that since birth I've always had a natural blonde streak at the back, and that must be what she could see.

But Chris was insistent. Definitely grey, she said.

And you know what? She might be right. Sure, centre of shot there's the blonde patch, all present and correct, and probably more pronounced because of the summer sun.

But the bit above it looks a different colour altogether. Kind of white. A definite ashen hue.

A chap could worry...

Update: A reliable source who has inspected said barnet confirms that the offending area is platinum blonde rather than white or grey. So that's all right. Not that I was worried. Not me. Oh no.