Google Docs: changing formatting of normal text without affecting automatically affecting headings

Applying a change to the indentation of normal formatting (e.g. first line indent) in google docs results in an automatic change to the indentation settings of all the other styles. It seems they have a basic inheritance from 'normal text'. Is there any way to get around this "feature" and ensure that changing 'normal text' only changes 'normal text' and not everything else?