A very effective way to have one menu item stand out is by transforming it into a button. Typically only the main call to action is a button to help the visitor focus.
WordPress makes it easy to accomplish a menu button. Start by navigating the Menu section on the backend, clicking on "Screen Options" in the upper right, and selecting "CSS Classes." Open the menu item you want to convert to a button and add the class menu-button.
Add the CSS styles to your styles.css file (under Appearance/Custom CSS for SproutWorx sites).
And here's what the final menu would look like (i.e. same as the menu for SproutWorxs itself!).