WHy are some User names Green?

[MTIH1992]

AnswerBank users post a question and underneath where it says who posted them, sometimes the User name is gree. why is that?

[bruce5755]

New ABers user names are in green for two weeks, then they turn black.

[oligopoly]

Do you

[oligopoly]

Oops! When you post a question on this site, if you look down the list of questions that have already been asked when it is time to submit your question, you can see if your question has already been answered. This one has been a few times....

[AB Editor]

Hi all,

As mentioned - usernames are in green for new registrants for the first two weeks.

AB ED