Hey there!
So I was formulating a response in another topic when it dawned on me that this isn't talked about very often.
"Green Leaf" players. They can actually be anyone, because all that's needed to get a "Green Leaf" icon is to have a fresh new character. However, for me who likes to help new players out, it can really throw me off when I'm speaking to the alt of a person who has, like, seven classes at 50 on their main and trying to talk to them like I would a new player, which can sound very helpful to a new player, but sound very condescending to a veteran.
What I propose: Make the coding flag for "Green Leaf" players be account-based rather than character-based.
That way, I know who's a new player and I can start a dialog to help them out with whatever they need.
If you still want an icon for "New Characters", maybe make the leaf red or yellow? Something to differentiate new players from new characters of experienced players.