The way to highlite grid's selected rows in GXT v2

public void colorLockedGridRows() {
Grid grid = gridView.getGrid();
ListStore<BeanModel> store = grid.getStore();

for (BeanModel model : store.getModels()) {
SecurityGroupVO bean = model.getBean();
if ( bean.isLocked() ) {
Element row = grid.getView().getRow(model);
row.addClassName("locked-row-background-color");
}
}
}