Strange colors. What do they mean?

Hey! It's me again. I am wearing a colorful shirt today, and I was just thinking of how people from the anime world have strange hair colors that we wouldn't normally have, or be born with for that matter.
Let's look at some pictures:

This girl has blue hair. How often do you see a girl with blue hair? My guess is not very much. I am just wondering, Why do anime artists do this? Maybe they would like to make their artwork interesting, fascinating, exquisite. Lemme tell you, anime IS interesting. Would it be interesting without the weird hair colors and styles? . . .I don't think so. If anime wants to stand out, it will have to be a little strange.

Or maybe the colors symbolize something. The girl in the photo above has blue hair. What could the color blue stand for? Hmm. Water. In reality water is clear, but blue is the color that symbolizes water. Maybe this girl is magical, and has the power of water. Or freedom. Blue is the color of the sky on a beautiful day, and if I close my eyes I can see a butterfly flying through that sky. Butterflies symbolize freedom, so maybe the color blue does too. Another long chain of endless possibilities. If you have an idea of what blue symbolizes, leave a comment.

I'm still hoping you will become a follower. :)

-Grace