Things I can't find...

[Pirate45]

On the default design, I cannot figure out which variable controls a few things... Help is appreciated.

1. Profile Page > Visitor Messages. These (by default) appear to have a white background. I am wondering which variable changes this? I am speaking of the area where the visitor messages are posted.
2. Albums > Recently Updated Albums. When you mouse-hover over the albums it has a white background. I cannot find where to change this.
3. Social Groups > Member display in sidebar. It shows four avatars and usernames on each row. Is there a way to downsize that to two?

Thanks!