For those of you using GNUstep with a Bluecurve theme, Windowmaker with Gnome or just want a Bluecurve look with Windowmaker, here is a Bluecurve-style icon for the Windowmaker dock.

Untar the icon to /usr/share/pixmaps

To replace the dock icon, simply right-click it and go to Settings. You can browse to the icon there.