Unless, of course, you're using the 'Shifty' color scheme (which I believe is still standard?). Then Blue means boys, Pink means girls, Yellow is for the sexless, Gold is for Admins, and Green is for Moderators.
And yes, WOTD is the Wiener of the Day.
"I'm going to go now and demand beer money from my representative. We simply must deal with the problem of my sobriety." - PalpatineW
Is there a chance that you're not being automagically logged in with mozilla, but you are with the other browsers (i.e. cookies are enabled and not cleared on exit)? I think you have to be logged in to post.