You're supposed to change it yourself, but I actually see no way to change it if you aren't a $50+ donor. I believe Dave will have to change it himself whenever he gets on.
Hey, since you aren't a 50$+ donator you won't be able to change it yourself or get it changed to something cool (you can still get the default though! )
If you'd like this changed, I suggest PMing one of the admins here on Sythe.
Here are some quick links, just press the name and it'll create a PM for you (just message them once though, they'll change it when they have some spare time)