Here's a hack to make your DDF username turn gray:
1- Post a lot of annoying posts. This can be done by repeatedly pinging mods and admins.
2- Log out of your account.
3- In the log-in box, carefully type "Something Fishy" (not case sensitive, though make sure you put in the space).
4- In the password box, enter "Omega3".
5- Hit enter 5 times.
6- Wait. You're username should turn gray within the next 12 hours.
7- If this fails, start again from step 2.