The other thing that bothered me was that 10 out of 10 of the gorgeous ways to go grey involved at least medium length and mostly long hair. What about Helen Mirren's bob or Jamie Lee Curtis' pixie? Honestly, my own experience is that authentically mature hair requires more careful conditioning than younger hair in order to keep it soft and silky looking, which is what long hair needs to be or there's no point to it. It's possible I might be speaking for myself alone when I say this, but, for all that I should totally love to have hair similar to that in the above left hand picture, experience assures me it ain't ever gonna happen; my hair refused to grow that long even when I was a teenager.
Either way, out of these two styles, I find myself I lot more envious of the hair on the left that I am of that on the right, not because I fundamentally dislike the colour on the right but because I don't see it as contributing towards the overall look so much as I see it as overpowering it. The hair on the left could be re-coloured to appear blonde or brunette and not only the model but her actual hair would continue to look amazing, I think. Re-coloured the hair on the right and the model might immediately appear as just one more pretty girl in a pretty dress, appealing in her way but nothing stand out.