Dear Maintainer,
When attempting to add a new Folder Sync Connection, the error message text that
the selected local folder is already used is unreadable when using the Adwaita-Dark
theme within the MATE desktop environment.
The error message "Please choose a different location. <location> is already being
used as a sync folder." follows the theme's text colour correctly, and so switching
to the Adwaita theme (which is a 'light' theme) makes the foreground text black/dark,
so becomes readable on the light-yellow background of the error message box.
Refer to the attached screenshots for clarification.
Regards,
Krystal.