Typically, your best colors make your features look clear and defined, right?
And colors that are too saturated can make features look a little blurry, right?
As they age, women sometimes gravitate to brighter colors precisely because of that effect -- the blurring of the features.
It's a bit like one of those soft filters sometimes used in filming older actresses -- like the one used on Sybil Shepherd on Moonlighting. (Here, "old" is relative! She was younger than I am now, I'm sure. But in Hollywood, it seems like "old" for women means "over 25.")
I don't necessarily recommend using brighter colors to create the Moonlighting effect. My aesthetic values authenticity above all
But when we know the effects of different color dimensions on our skin, we can use that knowledge to our advantage, if we like. Knowledge is power.
So if you do want to wash yourself out, for whatever reason, highly saturated colors are the way to go.