But Sam Coates is suggesting that transparency demands the release of the original image.
Coincidentally, the politics of appearance are also the subject of a brief tangent in Labour attack dog Denis MacShane's commentary in the new Fabian Review:
Cameron, as Steve Richards has pointed out, is not heir to Blair but a William Hague with hair, which gets blacker and more bouffant at each Prime Minister's Questions.
As you would expect from this high-minded think-tank, that is just a brief aside in a piece which is mostly a rather more ideas-focused challenge to the left (PDF here).
But perhaps the Daily Mail website could help out by offering some exhaustive photo-analysis of whether the Cameron hair has been getting any artificial help too.