I am trying to write a huge excel file, my requirement allows me to write the row and forget, so i am using SXSSF which allows to keep only a few number of rows in memory an
So, after a bit of searching through the web and reading the docs, i got a hint that SXSSF is actually a wrapper around XSSF, so i typecasted the CellStyle returned by SXSSF workbook to XSSF and was able to use XSSFColor directly for generating colors.
SXSSFWorkbook workbook = new SXSSFWorkbook(50);
Sheet sheet = workbook.createSheet("Image Data");
....
Cell cell = row.createCell(j);
cell.setCellValue(j);
XSSFCellStyle cs1 = (XSSFCellStyle) workbook.createCellStyle();
cs1.setFillForegroundColor(new XSSFColor(new java.awt.Color(red,green,blue)));
cs1.setFillPattern(CellStyle.SOLID_FOREGROUND);
cell.setCellStyle(cs1);