Replace blog title with image using autofocus theme

Hello, I am using the autofocus for one of my sites on my multisite network and I would like to replace the blog/site title with an image. Some themes have the option to do this within the theme settings but it doesn't appear that autofocus has this option. Is there an easy way to do this that I may be missing? Otherwise, I will create a child theme and customize the style.css page... Thanks!