public void testColorFromTheme() {
XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("styles.xlsx");
XSSFCell cellWithThemeColor = wb.getSheetAt(0).getRow(10).getCell(0);
//color RGB will be extracted from theme
XSSFColor foregroundColor = cellWithThemeColor.getCellStyle().getFillForegroundXSSFColor();
byte[] rgb = foregroundColor.getRgb();
byte[] rgbWithTint = foregroundColor.getRgbWithTint();
// Dk2
assertEquals(rgb[0],31);
assertEquals(rgb[1],73);
assertEquals(rgb[2],125);
// Dk2, lighter 40% (tint is about 0.39998)