I think this is common for newbie or expert that using wpf datagrid. DataGrid is used for lots of pages in application so repeatly styling is time consuming job. Theme project is savior. But there's no sample for that except very basic step in tutorial in companion. I spent 2 days with theme project and didn't get any progress. Xceed guys should consider for a sample and tutorial to build simple theme like re-pro Lunar/Glass theme in theme project will be lovely.

 Duy T. Doan