Features:
• Change icon and background for any folder in the Project window.
• Change icon or background for multiple folders at once
• Apply custom icon and background for all subfolders automatically
• Optional row shading and project tree outlines
• More than 70 pre-made icons included
• Supports Unity Collaborate overlay
• Supports Unity Version Control overlay
• Source code included

Check out the details from the Unity Asset Store: https://assetstore.unity.com/packages/tools/utilities/rainbow-folders-2-143526

Now download Rainbow Folders 2 FREE Unity