[Python] Changing markers for some but not all data categories in a in a matplotlib figure...

in pymc-marketing, I have a blackbox function that returns a matplotlib figure like what is depicted below. Since I ahve an issue with 12 vlues on a chart and differentiating them, I would like to find some way of setting some but not all of the markers to triangles for example. How might I do that?

The notebook with the code for this is at https://github.com/helios1014/marketing_mix_modeling/blob/main/mmm.ipynb and the chart is generated in the last cell.



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