using DevExpress.UITemplates.Collection.Skins;

static void Main() {
    // ...

    // Registers the Winter Joy skin.
    WinterJoySkin.Register();

    // Applies the Winter Joy skin to your WinForms application.
    WinterJoySkin.Apply(WinterJoySkin.Palette.WinterNight);

    Application.Run(new Form1());
}