public static void fillColorTest() {
    String file = "res/fillColortest.xls";
    Workbook wb = new HSSFWorkbook();
    Sheet sheet = wb.createSheet("new sheet");

    // Create a row and put some cells in it. Rows are 0 based.
    Row row = sheet.createRow((short) 1);

    // Aqua background
    CellStyle style = wb.createCellStyle();
    style.setFillBackgroundColor(IndexedColors.BLUE.getIndex());
    style.setFillPattern(CellStyle.SOLID_FOREGROUND);
    Cell cell = row.createCell((short) 1);
    cell.setCellValue("X");
    cell.setCellStyle(style);

    // Orange "foreground", foreground being the fill foreground not the font color.
    style = wb.createCellStyle();
    style.setFillForegroundColor(IndexedColors.ORANGE.getIndex());
    style.setFillPattern(CellStyle.SOLID_FOREGROUND);
    cell = row.createCell((short) 2);
    cell.setCellValue("X");
    cell.setCellStyle(style);

    FileOutputStream fileout;
    try {
        fileout = new FileOutputStream(file);
        wb.write(fileout);
        fileout.close();
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

Render render = new XlsxRender();
ExcelBuilder excelBuilder = new ExcelBuilder();

/* Создание стиля ячейки */
CellStyle styleBlack = excelBuilder
        .createCellStyle()
            .withRender(render)
            .useFgColor((short) 0, (short) 0, (short) 0)
            .createFont()
                .boldWeight((short)8).fontName("΢���ź�").italic().size((short)14)
            .fontOver()
        .cellStyleOver();

CellStyle styleRed = excelBuilder
        .createCellStyle()
            .withRender(render)
            .useFgColor((short) 254, (short) 0, (short) 0)
            .createFont()
                .boldWeight((short)8).fontName("΢���ź�").italic().size((short)14)
            .fontOver()
        .cellStyleOver();

/* Использование стилей ячеек */
excelBuilder
        .createDoc().docName("fluentTest2").type("xlsx").withDocRender(render)
        .createSheet().sheetName("Hello")
            .createBlock().fromRow(2)
                .createRow().fromCol(1)
                    .createCell().content("X").withStyle(styleBlack).cellOver()
                    .createCell().content("X").withStyle(styleRed).cellOver()
                .rowOver()
            .blockOver()
        .sheetOver()
    .saveTo("d:/app/tmp/excel")
    .rendDoc();