Plotly.NET

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Given an annotated heatmap I would expect the cell text to contrast with the cell color. (Not doing so leads to the readability issues in the current documentation/example of Annotated Heatmap: https://plotly.net/simple-charts/heatmaps.html)

A good contrast is shown and discussed on the python side of plotly: https://github.com/plotly/plotly.py/issues/1300

When I did not find a way to do that, I looked at the implementation of AnnotatedHeatmap. Here the configuration of the annotations is not dependent on the actual cell values - I could only apply a workaround of setting a background color. I did not find/check the actual layouting step if there is a better place to compute correct font color.