well, I have 3 colours -arent I lucky -grey, red, and blonde.
I had a friend who always nagged at me and said, people our age do not have three colours in their hair.
Eventually I asked her where this was written -which rule book was she getting her information from.
Imagine her horror when I turned up with a bright red long piece down the side!
So I cannot answer this question properly as who knows what colour I will have tomorrow.
Once I washed the thick red long piece with olive oil soap, not knowing that that is what hairdressers use to strip colour!
It went a bright orange and the hairdresser almost fell over when she next saw me! I now have that part a darker red.