Blue is the default color scheme for this theme. If you want to change the color scheme to green or coral you will need to go to Genesis -> Color Style. Choose the color option you want and then save.
Change Color Scheme for Social Circles Widget
If you use the Social Circles Widget like the demo, you might want to change the colors to match the color scheme you have chosen.
As you can see below, the demo site is using the Ubuntu font choice. You can change the font, and you can change the colors of the circles as they normally look as well as upon hover. The icon color choices to match would be as follows: