You can change the font color by means of the Advanced typography option, which allows you to choose the item from a drop-down or insert your custom CSS class. Please navigate to the Theme Settings > Typography > Advanced Typography.
When you set the light color scheme for the drop-down, you need also change each menu item: https://gyazo.com/5b808c7009625b9c43a20866a611a8af You know, the Dropdown menu .color-scheme-dark makes the background but not the text. Alternatively, you can change that with Advanced typography to avoid entering each item and setting the proper color scheme.
If you have any questions please feel free to contact us.