private void ModernWindow_Closed(object sender, EventArgs e)
{
Settings.Default.ChosenTheme = AppearanceManager.Current.ThemeSource;
Settings.Default.ChosenFontSize = AppearanceManager.Current.FontSize;
Settings.Default.ChosenAccent = AppearanceManager.Current.AccentColor;
var userPrefs = new UserPreferences();
userPrefs.WindowHeight = this.Height;
userPrefs.WindowWidth = this.Width;
userPrefs.WindowTop = this.Top;
userPrefs.WindowLeft = this.Left;
userPrefs.WindowState = this.WindowState;
userPrefs.Save();
Settings.Default.Save();
}