Folder Color is a free open source Linux app. Using this app you can change the color of folders quickly using a simple right-click menu. You can also change the color for multiple folders at the same time. It is available for Nautilus, Nemo or Caja File Browsers. Currently it is compatible with Humanity, Papirus, Numix, Vibrancy Colors, Vivacious Colors themes.It is released under license GPL 3 licence.