You could have downloaded Folder Icon X 3.1 for Mac from our application library for free. This Mac application is a product of Narattaphol Charoenphandhu. The software relates to Theming Tools.
From the developer:
Folder Icon X application provides an easy way to create custom folder icons and document icons by placing another icon on a standard plain icon. Users can set custom folder icons for both close and open states.Folder Icon X fully supports drag and drop, live icon resize, picture-to-icon, icon-to-picture, reading-writing in \".icns\" format. In plus, Folder Icon X can load any icons from any files or folders.
You may want to check out more Mac applications, such as Folder Icon Changer, Add Folder Icons or Folder Color, which might be related to Folder Icon X.
Icons & cursors
Icons & cursors