Hi Tony - this is what it looks like with some slightly different background colors for alternating rows. I think this will make it easy to see which eye belongs to a nested sub-item, whether you've got your mouse over anything or not.

Then I think I'm going to keep the border outline to be only an outline around the clickable sub-region of the row that you are currently on. But I'll also keep the text of the row that the mouse is over to highlight in blue.



- Michael