I finally did the right thing and emailed OSGeo that I’ve stopped coding and would like to use my designer skills instead. I was pointed to this wiki which pointed me to the site of Robert Szczepanek. He had created an entire iconset for QGIS inspired by the tango rules. I contacted him and he was very much interested to extend his work for a broader iconset for the OSGeo community. So where I expected to start from scratch I’m kickstarted to the point that I have to think of secondlevel issues like hosting, naming-schemes etc.
Still I’m very much excited by the prospect of creating beautiful GIS applications and so far I’ve had enthousiast reactions from developers as well.