Color Code Folder Icon?

I'm trying to assign selected folders to various catagories. I simply want to 'flag' by color, i.e. red folders contain files related to X, blue contain file related to Y, etc.

I had hoped I could just right-click and change the folder color but...

Does anyone know if/how this can be done?


For changing a folder's icon colour:

[Color Folder Icons)

If you want to change the background colour while in a folder then you can set that via a Folder Format:

[Folder Formats: Quick Guide)

you can download FolderIcon XP :

Thanks VERY much!