LiteIcon is a free Mac OS X utility that allows users to quickly and easily replace icons for any application, folder, or file. It is designed with an intuitive drag-and-drop interface that enables users to quickly locate and replace the icon image with a new one. LiteIcon also offers a wide range of customizable options, including the ability to set a custom icon size, change the background color, and set the zoom level. LiteIcon also features an icon history function so users can quickly switch back to the original icon if they don’t like the new one. In addition, LiteIcon allows users to assign icons to multiple files at once and includes a search function to make it easier to find the right icon.
Discontinued See note on the website: "Since we are not sure about the long-term future of changing the system icons, we are not comfortable charging money for CandyBar, and we are also not comfortable simply making it go away, so instead, we are going to make the current CandyBar free, but not compatible." https://panic.com/blog/candybar-mountain-lion-and-beyond/