Is Cameron dyeing his hair?

Iain Martin moves the Cameron hair story along over at Three Line Whip. Iain suggest that we hacks might have been wrong to concentrate on the parting and should instead have been examining the absence of any grey hairs.
Iain writes:

‘Any use of hair dye was initially vigorously denied but when I asked again at a later date I was told not to be so silly and urged to focus instead on the serious issues – which in my book is politician’s code for ‘this is true, but a little embarrassing.’

Cameron would be far from the first politician to resort to the use of dye but you can expect plenty of chortling in Westminster over this news. And yes, I think we can declare the silly season started. 

PS The photos above, the top one taken on May 2nd and the lower one on May15th, do suggest a slight darkening in recent weeks.