Enter key no longer sends message when I change text styles

I am trying to style some input text so the user can change colors, font, etc. I have 'textStyle' set to the users current font settings, but I want the input to show these settings (ie. if they choose green text, show green text as they type in the input).

This works, when I don't set the style of the input

 GUI.SetNextControlName ("MessageInput");
 newMessage = GUI.TextField(new Rect(10, curHeight - sendHeight - 15, curWidth - sendWidth - 25, sendHeight), newMessage, 300);
 GUI.skin = oldSkin;
 if (GUI.Button(new Rect(curWidth - sendWidth - 10, curHeight - sendHeight - 15, sendWidth, sendHeight), "Send")  || (Event.current.type == EventType.keyDown && Event.current.character == '\n'))
             {
                 print(newMessage);
                 GetComponent<LobbyGUI>().sendChatMessage(newMessage);
                 newMessage = "";
             }

But, when I set my Input to a style, the Enter key no longer works... can someone explain to me why this is?

Example :

 newMessage = GUI.TextField(new Rect(10, curHeight - sendHeight - 15, curWidth - sendWidth - 25, sendHeight), newMessage, 300, textStyle);

That changes the color, but the enter key no longer works to send the message.