Conditional Color Formatting by Dimension / Row Combination in Pivot Table

The Pivot 2.0 JS API, documented here, can potentially be used to create a widget script for this functionality, the cell "metadata" parameter includes information on a cell's position on a row and column level basis, once a given cell matching both a row and column conditional is found, the background color or text color of a cell can be modified using the "cell.style" parameter. This community article may be helpful for an example of this type of script.