Interestingly, Folder Color app can help to customize Folder icon in OS X El Capitan. You can change the standard Folder color in Mac OS X, make your own colorful folder at your desire.
Trust me, this Folder Color 2.0 will satisfy you by bringing a new theme of your Mac OS X system.
Look at the pictures below to see the instructions:
Folder Color 2 supports adding pictures into resource library and edit them to specialized your folders category. Mac users are able to change the folder icon color, manage your folders via different color classification, make your own stunning folders with simplicity and ease. Especially, you can create your customized icon based on size, position, shadow and transparency…. and more….
Folder Color 2.0 full version free download for Mac OS X.
Download link: http://eshareload.com/folder-color.html