Step 1: First Download Folder Colorizer
Step 2: Install it and navigate to any folder that you wish to assign Color. Right Click on that folder and you will see Folder colorizer Integrated in the Context Menu. See That Give Below Image
Step 3: Hover your Mouse on Colorize and Choose your Favorite color
Step 4: After Choosing your favorite Color you will see that color has been assigned to the selected folder. repeat same steps for other Folders too.
Hope u'LL like it... :D