Folders in Windows can be customized with a different color with Rainbow folder App. Found about this app in an article at TheWindowsClub.
Rainbow Folders is a nice program that allows you to change the color of folders right from the context menu.
This is a versatile program and can be used in so many ways. For example you might denote all of your work folders with a red color to visually differentiate them from other folders.
In short, with this program you can colorize your folders and speed up your navigation among the hundreds of folders located on your hard drive.
Rather than offer you a limited number of colors, it lets you use a hue to make an unlimited number of shades.
Works on Windows Vista & Windows 7 too!