DevExpress Theme

 

https://docs.devexpress.com/WPF/400728/common-concepts/themes/palettes#predefined-palettes

 

ThemeManager.PreloadThemeResourceAsync("Office2019White", runTypeInitializers: false).Wait();

            ControlzEx.Theming.ThemeManager.Current.AddLibraryTheme(new ControlzEx.Theming.LibraryTheme(
                                                     new Uri("pack://application:,,,/Resources/ColorScheme.xaml"),

 

  ControlzEx.Theming.ThemeManager.Current.ChangeTheme(Current, colorScheme);

 Theme.RegisterPredefinedPaletteThemes();
            string paletteName = "Light.Blue";
            ApplicationThemeHelper.ApplicationThemeName = paletteName + Theme.Office2019White.Name;