A yellow message says that Oh no! Your email address has not yet been confirmed. You should have a confirmation message in your inbox. Didn't get it? Click here and we'll send a new one. If you need to change your address, head to your Preferences page. I have and it has done nothing.
I don't think the wiki is looking for additional staff at the moment, but if you remain active, contribute often and help your fellow wikians, I am sure that you will be considered when the time comes.