Viridis GTK - this theme is based on the ThinIce theme engine and was designed using the various other ThinIce GTK themes available on gtk.themes.org. This theme is licensed under the GPL. I personally had to remove my ~/.gimp-1.1/gtkrc file in order for the GIMP to work correctly with this theme - because the text boxes would be white text on a white background when they should have been black on white. The theme itself was created around the Propaganda image Metcalfe-Loves-Linux-4.JPG - as was the Viridis E theme and the Viridis xmms, licq, and gkrellm skins.