private void rect_MouseDown(object sender, MouseButtonEventArgs e)
        {
            BrushChangeEventArgs arg = new BrushChangeEventArgs();

            arg.selectedBrush = (sender as Rectangle).Fill;
            if (BrushChanged != null)
            {
                BrushChanged(sender, arg);
            }
        }
 void brushList_BrushChanged(object sender, BrushChangeEventArgs e)
 {
     if (curDbInfoTab.treeView1.SelectedItem != null)
     {
         curDbInfoTab.treeView1.SelectedItem.MyForeground = e.selectedBrush;
         curDbInfoTab.SaveTreeToDB();
     }
 }