Windows show Some Files and Folder Names in Blue or Green Color in Windows Explorer
Green means encrypted, Blue means compressed.
Files & folders names in blue or green is nothing but the feature in Windows called as NTFS (New Technology File System) file system. If the file or folder is compressed to save space on your hard disk and when a file or folder gets compressed, Windows shows its name in blue color to make them easier to identify. Similarly, if a file or folder is encrypted, name is shown in green color.