Reset/Remove dynamic styles on Vaadin 8

If I do

Page.Styles styles = Page.getCurrent().getStyles();
styles.add( ...

on Vaadin 8, is there any way to reset the pages styles to original?

I mean if I change the styles for something multiple times this actually works, because styles get overriden, but the page css starts to grow and grow. Any way to prevent this?

I have had no need to try this, but I assume that UI.setTheme(…) could do the trick, since it should remove the old theme completely.