Was this a Thesis theme feature? Or something else? I’m not sure if that’s possible with Genesis/WordPress or not. You’d probably need to figure out exactly how that feature works and where it’s coming from.
To be honest, I haven’t heard of too many people doing that in Genesis, but that doesn’t mean it’s not possible. Since this deals more with the Genesis Framework, I would ask this question at StudioPress since they would know best. Nathan Rice is the main developer of the framework, so he would know the answer more than anyone.