Folderhighlight!

Folder Marker is your small assistant, an ardent fighter for your convenience and comfort in any kind of computer work. Use Folder Marker to mark your folders. One mouse-click and it becomes clear at once which documents have a high priority, and which of them have a normal or low priority. It is easy to see which operations have been finished completely, which are partly done and which havent been started yet.

Windows Explorer is too boring? Color it up! Assign any color to any folder – just right-click a folder and choose “Colorize”! Supports your own colors, labels and works seamlessly with any version of Windows.

iColorFolder is a software allowing to change the color of Windows XP folders, with a simple right-click on them. It is fast, doesn't stay in memory, and comes with a Skin Selector. It supports a lot of different skins based on popular icon sets.

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.