I recently applied an update to the forum and it messed with the main theme.
I wanted to reinstall the theme before, but this kind of forced me to. I lost most of the settings I had applied, so I tried my best to get it close to where it was before.
Some of you may have chosen to have the default theme, so if you would prefer that theme the link is at the bottom left of the page. (The color is a little hard to see.)