Can you please tell me how to handle black lines Dark Mode LibreOffice Draw.
I expect that they are shown in white, so they are readable.
But for lines there is no possibility of an automatic colour.
I hope there exists a good solution.
Dark mode in a drawing program sounds very singular. As a workaround if you create a style with white lines and all drawing styles as a subset of that and rigorously apply styles then at the end of the project you just have to do one change, the top level style to black lines and any other substitutions you might have made including text boxes