See also scripts/readme.txt

backdrops	CDE backdrop files
gtk-2.0
gtk-3.0 	this is a link to gtk-3.16, necessary (apparently) for the theme to be listed in gnome-tweak
gtk-3.16 	
gtk-3.20
img		
img2
palettes 	CDE palette files (default Broica.dp)
scripts 	scripts for generating theme and the cdepanel (CDE front panel app) itself
xfwm4		xfce window decorations
