Adjusting heatmap colors in Python, Jupyter Lab

[cjhutto]

Hey Nicolas - great resource here, thanks! I've been using PivotTableJS in Jupyter Lab recently, and was attempting to customize the heatmap color scale. Below is what I've tried, but it doesn't quite work... I'm probably missing something simple here, but don't see what it might be.

Can you help?

Here is the Python code I'm running in Jupyter Lab:

pivot_ui(df, 
         rows=["Row1"],
         cols=["Col1", "Col2", "Col3"],
         aggregatorName="Average",
         vals=["Score"],
         rendererName="Heatmap",
         rendererOptions={"heatmap": {
            "colorScaleGenerator": """function(values) {
                return Plotly.d3.scale.linear()
                    .domain([0.0, 0.5, 0.75])
                    .range(["#77F", "#FFF", "#F77"])
            }
         """}
         }
        )

Any help is much appreciated.
Cheers!