I think it's wonderful they work in an industry that allows them to color their hair purple. Although most of us don't, I think hair chalk is fun for the weekend when you want to add a little fun color to your hair but it can be washed out by Monday morning!
I love to dip dye my hair... Try pink of blue for a more summery look. I think purple works really well with darker hair and skin tones but saying this Katey Perry looks awesome. You've gotta try something new once in a while!