I’m a community member too. I couldn’t find any options to do this either. There is an open Brave GitHub issue report that I linked below that includes this as part of the whole “UI advanced customization” issue. Has been backlogged since 2018 though… there has been user comments added and recently too!
You might want to create a topic in Brave Feature Requests to add this as a feature. Here’s the pinned topic explaining the category About the Brave Feature Requests category. I searched the category and couldn’t find a topic that specifically requested this feature.
