Do you have an example on how to do these designs? The rounded boxes look nice, how about the special icons next to the window controls?
I had to “invent” and create many components myself (date input, scroll bar, checker, etc.). But this process was not completed: the color of the drop-down list is not controlled, problems with tables (color of scroll bars and footer/header lines). A lot of code was written, a whole library of “virtual classes”, but for a private project. Perhaps after some time I will have the opportunity to publish applied solutions.