Hi Here is the upstream's answer on #533570.
> Yes, this is a known issue, limitation of GtkTreeView. There's no way > to dynamically change colours of the cursor/text, with no significant > performance impact. Any hints are welcome, the widget is not flexible > that much however. So if something in this direction will be implemented, then first there has to be solved this limitation of GtkTreeView. Kind regards Salvatore
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