How to change color to white outside contour range?

šŸ“Š Plotly Python
1

Hi

I am using below to plot contour, Iā€™d like to set color the white(not shown) if value is outside contour range like below z_min. For my plot, everything below z_min is still blue color. I saw it is working from the below example after setting start=, end= inside contour=dict(). Thanks for your help.

fig.add_trace(go.Contour(
                            # last column, either pressure or temperature
                            z = Z.T,
                            x = X[:,0], 
                            y = Y[0], 
                            colorscale='Jet',
                            contours=dict(
                                    start=z_min,
                                    end=z_max,
                                    size=25,
                                    coloring="heatmap"),
                            zmin=z_min,
                            zmax=z_max
    
                          )
                              )