En principe, the image of the French Riviera is fashion, chic style, elegance, etc. with everyone walking around dressed to the nine's in Louis Vuitton and Christian Dior! (fashion show videos)
Nice is a multi-cultural city, with a wide diversity of people with
their own style (so to speak!).
It seems to me that anything goes here,
no matter what age -- for example, I have seen a middle-aged lady with
carrot-orange hair color, another lady with purple hair, and a quite
eldery lady with bright cherry-red hair color. My first reaction was
negative, but then I thought, you know what -- bravo to these women, for
having the guts to do/wear what they want, and if they are content with
it, then who am I to judge? They seemed quite comfortable with how they
looked (whether intending to make a statement or not!) and were
obviously "bien dans leurs peau"!