When you're young, it seems the sky is the limit when it comes to styling your hair. What you begin to realize as you "mature" is that what you and everyone else loved in your twenties doesn't always translate in your 50's and 60's. That being said, the trend has loosened quiet a bit in regard to the length of a woman's hair as she matures. In the past, it was almost mandatory that a woman crop her hair short, but today you'll find every length imaginable on women of all ages.
I think it has more to do with what you "DO" with your hair, and how you carry yourself. I've seen women my age that made themselves look older because they cropped their hair off to just a couple inches and quit wearing makeup. There's also some truth to the notion that gray hair can age a person's face. And, from what I've learned, the warmer shades tend to accentuate a woman's face more appropriately as she ages (our skin fades). So if you're going to let your color go gray, you'll want to be aware of the shade of your makeup to compliment it.
I've seen women my age with really long hair, that looked like refugees from the hippie movement (there's nothing worse than trying to look younger than you are).....and then I've seen total opposites of the same type of hairstyles because the women were aware of they're whole look, and accentuated the positives. I guess what I'm trying to say, is it's nice that we have choices and with the new products available, so much more is achievable than it was a few short years ago.
No I'm not getting married.