Two months ago I start to finalize the existing Elementary icon theme for LibreOffice. It’s about 2.000 icons and now they are available in LibreOffice 6.0 beta. In addition all icons are available as svg file so it can be used and edit in an easy way.
Please download and test LibreOffice 6.0 beta to give feedback. You switch the icon theme with Tools -> Options -> View -> Icon Style. We talk about a lot icons not all are perfect. Feedback is always welcome.
Mary Christmas and an shiny new year with LibreOffice 6.0.