Labelstudio UI: underline a text (NLP)

Hello,

I just wanted to ask whether it is possible to change the way the text is marked with a particular label. I want the annotator to mark the text with two different types of labels (1. choose a label for multiclass classification + 2. underline a relevant text span for detected label in multiclass classification). The functionality of Labelstudio covers per default the background of a selected text span with a particular color. I tried to change the way the selected text span is marked (something like _text-decoration: underline_ in CSS) but did not manage to do it.

Thank you very much in advance!