In LO 7.5 the default “automatic” light icon theme is “Elementary” and the corresponding dark icon theme is “Breeze (dark)”. Is it possible to set the automatic light theme to “Breeze” and have it automatically toggle between the light and dark variants?
You can change the light icon set in Tools - Options - LibreOffice - View.
The default icon set is shown with (default) after Automatic before the name. Automatic is set to Colibre in my LO 7.5.0.3 with a new user profile. If I switch to Windows Dark mode then the icons switch to the dark version of Colibre.
I wonder how you get two different icon sets depending on light or dark modes?