LiteIcon - LiteIcon is a simple app which allows you to change your system icons quickly and easily.
Folder Marker - Change folder color in two mouse clicks for easy at-a-glance identification.
Replacicon - Just updated to macOS Big Sur? You may have noticed some of the apps in your Dock look a bit inconsistent with the rest of the system.
Teorex FolderIco - FolderIco allows to change the color of Windows folder in one click!
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
Folder Painter - Folder Painter is an easy to use Portable Freeware program, which allows you to change the color of the icon representing a chosen folder to any color you like