1. After entering the World of Warcraft game, the user clicks the ESC button to pop up the main menu on the page. After the main menu of the page appears, the user selects the "Interface" button in the main menu, and the user clicks to confirm. After the game interface appears, click the "Name" button in the left column of the interface.
2. There is no way to change the display of others. If you want to change your own font color, right-click the chat box and there is a setting. Click on it to see that each chat channel has a corresponding color, such as when chatting in a guild. Green, click on that color to change the color you like.
3. Those are not colored words. For example, /1 plus a space will produce gray-white characters. /p plus a space means the team is blue/y plus a space means shouting is a red word/w plus a space is M someone else is purple.