Returns the color when this structure has an RGB color, as a 0xRRGGBB integer. This property is fully functional with Excel 2007 or newer, older versions will be converted to Indexed color before saving as xls.
Note: When reading a color, the value here might not be the final one, since Tint is applied to get the final color. Use ToColor(TCoreExcelFile) method to find out the RGB color stored in this struct.
If you try to read the value of this property and ColorType is not the right kind, an Exception will be raised.
property TExcelColor.RGB: Int64