Blue = compressed or encrypted.
if you have marked your 'My documents' folder as private, any files you save there will be encrypted and only accessible from your login.
Compressed files also show up as blue for some reason. Windows likes to compress uninstallation scripts for stuff downloaded from Windows Update (look in C:\WINDOWS and see all the $NtUninstallKB873333$ folders, they will all be blue).
You can tell if it's a compressed file if you click on its properties. It will show a file size generally a fair bit higher than the 'size on disk' size.
if you have marked your 'My documents' folder as private, any files you save there will be encrypted and only accessible from your login.
Compressed files also show up as blue for some reason. Windows likes to compress uninstallation scripts for stuff downloaded from Windows Update (look in C:\WINDOWS and see all the $NtUninstallKB873333$ folders, they will all be blue).
You can tell if it's a compressed file if you click on its properties. It will show a file size generally a fair bit higher than the 'size on disk' size.