DiagramColorsPart colors = new DiagramColorsPart();
colors.unmarshal("colorsDef-accent1_2.xml");
//colors.CreateMinimalContent("mycolors");
DiagramStylePart style = new DiagramStylePart();
style.unmarshal("quickStyle-simple1.xml");
//style.CreateMinimalContent("mystyle");
// DiagramDataPart
DiagramDataPart data = new DiagramDataPart();