First of all, this piece of information is quite advanced, so be sure you are well-aware of the module's basic functions and main extensibility and customization points, at least through AppearanceController. If not, check out the related online documentation before reading further.
Would it be possible to add in the conditional appearance module the possibility to show a tooltip in the cell in listView when the
condition is satisfied? (you get different color based on criteria and when you move to the cell a tooltip is shown telling you why the color is different ), example: