What does it mean when someones name is yellow?

I'm not totally sure what it means but I think someone's name turns yellow after they kill over 1,000 players in Player VS Player witch is in the Battle Arena.

It means you have wildclub, it has nothing to do with PVP. •~•

Oh never mind someone's name turns yellow after they kill 10,000 players in Player VS Player.

Your name turns yellow when you buy a vip pack. This also gives you gems, money and skins. But unfortunately you cannot purchase this pack anymore and the players with yellow names are the older players who bought it prior to the removal of this pack.

I think it's when they are part of a clan

It means they have wildclub. My name is yellow and I have wildclub, so does my friend . It has nothing to do with your level, pvp, etc .

I believe it's when someone's at level 1000