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Gets or sets the RGB color of this theme color entry.
This property uses the resolved Color value associated with the current ThemeColor in the workbook theme color scheme.
Color RGB { get; set; }
Property RGB As Color
ITheme theme = new Theme("CustomTheme", Themes.Berlin);
workbook.Theme = theme;
IThemeColor themeColor = theme.ThemeColorScheme[ThemeColor.Accent1];
Color rgb = themeColor.RGB;