How to disable background colors for (only some) folder names?

[tobwen]

Suddenly this morning after starting my computer XYplorer shows colored backgrounds for some (but not all folders) in Tree view on the left and folder list view on the right pane.

Their folder name font color switch from black to (almost) white and the background of folder names from white to pink and green.

I guess I must have changed accidentally a setting in XYplorer.

How/Where can I switch back to the normal default folder name coloring?

[admin]

A color filter probably. The tooltip of a colored folder tells you which filter is applied.