Just tested it with MS Excel 2013, and it's working correctly; it should work with all OfficeOpenXML format files since Excel 2002.
But I've already been advised of one colour issue that doesn't work on certain MS Excel versions on Mac this week, so it's possible that there may be a similar discrepancy if you're on a Mac
But I've already been advised of one colour issue that doesn't work on certain MS Excel versions on Mac this week, so it's possible that there may be a similar discrepancy if you're on a Mac