add custom Style to (top level) Workspace Folders in File Explorer

[sillyslux]

Please add a setting or make it the default to have root-level folders use a different background, so they stand out more.
After adding a few folders to my workspace and expanding some subfolders, the file explorer gets confusing, at least to my eye.

[sillyslux]

i've started using this rule with the custom-css extension for now
.explorer-folders-view [aria-level="1"] { background: rgba(0,0,0,.1); }

[IllusionMH]

In the meantime, you can use file icon theme which can provide custom icons for rootfolder-icon.
Seti icons theme doesn't have folder icons at all, however built-in Minimal theme has custom icons for root folders.
Popular themes from marketplace most likely have custom icon for root folders (Material icon theme have them for sure)