Heatmap with Transparent Colormap

ScottPlot.Plot myPlot = new();

double[,] data = SampleData.MonaLisa();
var hm1 = myPlot.Add.Heatmap(data);

Color[] colors = [Colors.Navy, Colors.Transparent, Colors.Orange];
hm1.Colormap = new ScottPlot.Colormaps.CustomInterpolated(colors);

myPlot.Add.ColorBar(hm1);

myPlot.SavePng("demo.png", 400, 300);