Someone else mentioned (katheryn maybe) that it looks like the newer members are in black.

Some of the others like muffy and keb who left and came back are also in black even though they have their title back and it lists the number of posts, the "member since" date is different then before.

Below is keb's. We all know she's been here longer than a few months, but maybe the computer couldn't restore the original date and sees her as new.

Member since:
Aug 2007