Jillian,
For question 2, you can change the color in the stylesheet. You must be able to customize the css to do this. If you can, go to the editor and search for #home-page-widgets. The background color is #d9534f, but you can change it to whatever you want. You may also want to change
.basic .home-jumbotron .middle-circle {
color: #d9534f;
}
to match.
I had the same problem with the background not showing, but I had changed my header.php which may have thrown it off. If I remember how I fixed it, I’ll let you know.