Returns the additional color scheme at the specified index. This scheme don't affect presentation's look, it can be selected as main color scheme for a slide. Read-only Aspose::Slides::Theme::IExtraColorScheme... Read-only Aspose::Slides::Theme::IExtraColorScheme virtual System...IExtraColorScheme > Aspose :: Slides :: Theme :: IMasterTheme :: get_ExtraColorScheme...