Why my name is red?

What do you mean?

If you haven't figured it out already go to your profile and click the advanced tab and look in the area that says other info you will see PK and right next to it is a !, click it and it will tell you information about the PvP stuff

How to change it back to green I couldn't do it and other players started to attack me

How??

Go to safe area or click "rage" near your profile photo(if that was not "rage" then, don't click it)

So like, my name is red too, because I went on rage mode and atk people.... So it's now pink andd it said to wait in hostage area, but what is hostage area? I've afk in cassel college but my pvp pts is not going down.

oh no! my pvp point is 7k so that mean my name's gonna be red forever???

Hi all you have to do is click the left of the screen. There should be a tiny tab next to "train", click the tab next to train until it says peace and it will turn the color back to white