public void SaveSettings(AppVisualSettings vis)
{
Settings.Default.CustomBackgroundUrl = vis.BackgroundUrl;
Settings.Default.AppBrushes.Clear();
foreach (var b in vis.AppBrushes)
{
Settings.Default.AppBrushes.Add(String.Format("{0};{1}", b.Name, b.BrushColor));
}
Settings.Default.Save();
}