Yes, they have everything we do except different colored names, plus more since they can delete almost anything on here that counts as spam, double post, and/or just stupid.
They arn't premium but they do have most/all the features that premium members get.
Thebigboss: yes they can change their usernames like premium members do.
No. They are not premium. They are moderators. With the option to have what premium members have. Does it matter? Lol They are moderators. It shouldn't concern you that much.
No one automatically has or gains premium membership by default, its is only acquired via subscription through the use of money. Moderators can do all of the things premium members can and even more, such as editing other peoples post and deleting threads and general forum moderation. However, a moderator can still be premium via subscription just like anyone else.
No we don't have premium. We get some benefits with modship that are the same or similar to the ones premium users get, however that doesn't make us premiums.