Suddenly all my bookmark folders are grey instead of yellow as far as my Brave Browers. I use Windows 10.
In order to fix the problem, I deleted Brave using IObit Uninstaller10 so it would be a clean reinstall. But to my surprise all the settings stayed the same including the grey folders.
I like Brave a lot, but if I cannot solve this folder issue, I will probably just go back to using my Chrome browser most of the time.