Knowledge: Wearing wigs is a common reason for anyone to experiment with different colors without making permanent changes to their look while hair coloring can be a form of self expression for people to stand out

Conversation:
I've never really used hair colors
It is the practice of changing the color of one's hair
That sounds interesting. But for what reason would anyone change the color of one's hair?

Response: People color their hair as a form of self expression to stand out