The Cubase 10.5 manual reads
“The color of the folder indicates the state of the scan:
● Red indicates that a folder is currently being scanned.
● White indicates that all subfolders have been scanned.
● Yellow indicates that at least one subfolder is not yet scanned.”
I do not have any White folders, I have a grey folder for a folder that is unchecked to not scan. I have left Mediabay open all night and still have a lot of yellow folders but there are no subfolders so I am confused. I also have multiple orange folders which it says nothing about. It does say orange for checkmarks indicates that at least one subfolder is excluded from the scan and that all checks out fine.