How many of us actually had the same natural colour hair for over 5 decades of their life?

The only time my hair colour was different:

probably when I was a baby, since hair probably was a dark brown then after 1 yr. at least, on alot of Asian babies, it's black

Then when I grow old...grey. which hasn't happened yet.

My life is monotone. Not terrible thing, really. One less thing to worry.