snowserf21@GroLux:~/Desktop$ dpkg -l | grep emerald
ii  emerald                                    0.5.2~git20071006+3v1ubuntu0                Decorator for Compiz and Beryl
ii  emerald-themes                             0.5.2~git20070812+3v1ubuntu0                Package of themes for Emerald
ii  libemeraldengine0                          0.5.2~git20071006+3v1ubuntu0                Decorator engines for Emerald
snowserf21@GroLux:~/Desktop$