Do you like to color your hair? Mine is purple. 
I did when I was in my 20s and already getting the salt and pepper look.  I finally embraced it since I am a guy and in my early 30s!  What made you choose purple?
I change it up quite often, but purple seems mysterious so I like it the most. 
Interesting!  Is it expensive to continually change and maintain different hair colors?
It would cost a lot if I had it done professionally, but I do it myself so it isn't too bad. As a guy, how much does it cost you?