Terminal.app reverse text color under cursor
You can go into Preferences and change the color of your cursor so the text is visible behind it. The cursor color is changed by going to Preferences/Profiles where you get a panel like the one shown in the figure below.



I changed my cursor color to red and I could see letters behind it fine. Another option is to change your cursor to underline or a verticle bar. Those optional are selectable on the same pane to the left of my red box.