Recoll, how to back to light colors theme

I have changed recoll to Dark theme and now I can’t return to light theme. The button does not respond.
I have uninstalled and deleted the .recoll folder, but after installing again it keeps in Dark mode.
I am in xfce.
Help please.

Please see How to Post and How do I ask a question?

Please edit your topic title accordingly.

I can’t see how to edit the topìc.

Normally there would be a pencil :pencil2: icon, however I’m sure the timeframe allowed for edits has expired seeing how it’s been almost three weeks.