Thanks, looked into it and now have a global menu using the kde plasmoid. Not bad, only problem is lack of gtk+ support. Does xbar support gtk+? I've seen some themers using bespin are using something called Be:shell which makes kde look so minimal and am considering giving it a go once I have the chance.
Sure ! I'll check if the licence permits fork and see if I can set up synchronisation with a git server. Keep in mind, the modification I've done goes against the dynamic the engine proposes. The colours I use are independent from the set defined by the engine ( button, window, etc ... ) ie. they are hardcoded. I'll share along the bespin conf file and color scheme