Allow Coloring of individual Cells in a Pivot Table based on cell content (Heatmap)

I would like to create a Pivot Table that acts as a heat-map. Unfortunately, I can only display the count of some records in a given cell, but not make the color of these cells based on it. E.g. I would like to have cells with a higher number in green and cells with a lower number colored red. ... Just like in excel: "format cells based on values"