Suppose i have the following Categories and Subcategories
Category: Food: Subcategory: Nuts
Category: Trees: Subcategory: Nut trees

Now it is possible (and makes sense) to assign a single colour to both subcategory Nuts and Nut trees. Some papers however, will naturally be categorized in both groups. In such instances, Jabref currently displays twice the colour in the main table (in the column group color). Would it be possible to only display the unique colours?

I hope this (rather contrived) example is clear. Please let me know if not!