silent@silent-desktop:~$ dpkg -l|grep beryl
rc  emerald                                    0.2.1-0ubuntu1                         Decorator for beryl
ii  libberyldecoration0                        0.3.0+git20070324~3v1ubuntu2           Settings library for plugins - Beryl Project
ii  libberylsettings0                          0.3.0+git20070324~3v1ubuntu2           Settings library for plugins - Beryl Project
ii  libemeraldengine0                          0.2.1-0ubuntu1                         Decoration engines for beryl
silent@silent-desktop:~$ 
silent@silent-desktop:~$