[Tass007]

It depends how you're getting the information in the /admins command. You probably haven't updated the data you're using to get the color/name. Post the /admins code and we might be able to be a bit more helpful.

In order to make sure the command, /setacoloraname is working properly as is. Use that command and then relog, or restart the server and see if it changes. If it does then you aren't updating data if it doesn't, something else is going on.