*/
public void setTopBorderColor(XSSFColor color) {
CTBorder ct = getCTBorder();
if(color == null && !ct.isSetTop()) return;
CTBorderPr pr = ct.isSetTop() ? ct.getTop() : ct.addNewTop();
if(color != null) pr.setColor(color.getCTColor());
else pr.unsetColor();
int idx = _stylesSource.putBorder(new XSSFCellBorder(ct));
_cellXf.setBorderId(idx);
_cellXf.setApplyBorder(true);