LMM, my H used to like his slightly graying hair when it started a few years ago but for a few months prior to BD he started dying his hair and for the first half of the MLC kept it dyed. He stopped for many months but then has again once or twice fairly recently, so who knows. I personally like the gray.
When the hair coloring started is when my H also started working out like a mad man, losing weight, buying "young", tight clothes, etc. He hasn't been to the gym in very well over a year (maybe year and a half at least or more) and those tight clothes don't fit anymore.
He for the most part dresses more like the way he used to now.