Current state button

I am trying to create a slide in Storyline that functions similar to the Process Diagram slide in Articulate Engage. In Articulate, the button that is currently being viewed has a different color state than the normal buttons.

In the slide I'm creating I have my numbered buttons created which triggers a layer to appear on the right side of the slide with the BASE content that still appears on the left.  I want the students to know which button they are currently viewing by making it darker than the normal state since they can click them in any order, just like Engage.  I also have already set the Visited state buttons with a grayed out look.

My dilemma is I cannot make this work. I originally tried to use the Selected state to show the currently layer, but that does not work in the way I thought it would. When using the Selected state in Preview mode, the button changed to the darkened color I selected, but when I went to the next button in the list, the previous button still remained in the darkened state rather than showing the Visited grayed out state. If I returned to the button a 2nd time, then it would go to the Visited state-- basically it toggled back and forth from Visited to Selected.

After discussing this with a co-worker, he said he thought the Selected state was more for things like quiz-type buttons where it would show the buttons the students selected before clicking Submit and was not really meant to do what I was trying to accomplish.

 Is there a State that simply shows what the current selected item is?

Thanks!