Johnny Cash got famous for wearing black at his shows. He even wrote a song about it; “Man in Black“.
Here’s a quote from Mr. Cash regarding his black clothing:
I wore black because I liked it. I still do, and wearing it still means something to me. It’s still my symbol of rebellion- against a stagnant status quo, against our hypocritical houses of God, against people who’s minds are closed to others’ ideas.
You’ll find more quotes here.