I believe you are looking for Toolspace > Settings tab > Profile View node > right-click > Edit Feature Settings ... > Default Styles > Cut/Fill Area Shape Style:
![profile_hatch_default_styles.png profile_hatch_default_styles.png](https://forums.autodesk.com/t5/image/serverpage/image-id/668638iC090DE1BBAB8F31C/image-size/large?v=v2&px=999)
If you are looking to change a specific style, they are listed under Toolspace > Settings tab > General node > Multipurpose Styles > Shape Styles.