When you say you added the text, do you mean, just text that you typed right on the menu backdrop?
On the menu asset, you can draw a button selection, then in the property inspector of the button, click on the TEXT area and add text. Click on the Include Text in highlights check box. Now adjust the highlights. start with Normal and set it to white 15. Select Yellow 15 and Green 15 for the Selected and Active states respectively.
Now, click on that text, to select it.
On the view window, at the bottom right there are three states buttons for previewing normal, selected, and active states. Click on each one and note how it changes the colors of the text.
To set to chapters, click on the target of the button from the buttons property inspector. As you navigate to the right track, you will see your track digs a level deeper showing each chapter. My_Movie::Chapter_1 for example. You can use that target pull down to drill down to each chapter level for each button you create.