Xentient Labels!

LabelsWin file and folder colour icon labels for Windows Explorer. Allows you to mimic the OsX feature to color-tag files and folders. There is a lite version that only works on folders, tried on Windows 7 and it didnt work, it claims compatibility.

TrioXLabels is a utility that lets the user easily mark files and folders in the disk as one of the many pre-designed beautifully-coloured labels. It’s the closest you'll get to a Windows version of color label on Mac OS X.