Board Thread:Support Requests - Getting Technical/@comment-4675715-20140306041507

Sorry if this is too long, but I need help with the following;

1. How can I change my entire wiki's and the navigation bar's font? I've already tried, but all I managed to do was change the color of the admins names.

2. How can I add an image behind the navigation bar? I haven't tried, because I don't even know where to begin with that.

3. How can I change the everyone's profile image from square to circular?

4. And, lastly, how can I make the admins comments a different color?

Thanks to anyone who helps in advance! 