Xfce engine by Olivier Fourdan <fourdan@xfce.org>
    Peter de Ridder <peter@xfce.org>

Port to GTK+-2.0 based on Thinice port by Tim Gerla <timg@rrv.net>
    Tomas Ögren <stric@ing.umu.se> and  Richard Hult <rhult@codefactory.se>
Portions based on Raleigh theme by Owen Taylor
Portions based on Notif theme
Portions based on Notif2 theme
Portions based on original GTK theme
Portions based on Smooth theme by Andrew Johnson <ajgenius@ajgenius.us>
Portions based on IceGradient theme by  Tim Gerla <timg@means.net>
    Tomas <C3><96>gren <stric@ing.umu.se>
    JM Perez <jose.perez@upcnet.es>
Portions based on Wonderland theme by Garrett LeSage
    Alexander Larsson
    Owen Taylor <otaylor@redhat.com>