Feature Request: Show free space on drive?

[BrainSlugs83]

I think it would be neat if you could add an option to color the drive / folder title bars to show free space.

I get that various plug-ins would need to be updated to support it before it would work in them, but from the get-go, it would be really useful for browsing network shares, ftp, etc.

Eventually, when plug-in authors updated their plug-ins to add support, it would also be really useful for ADB, and other remote file system providers.

Thanks,
--Mikey