Can not set font color in conditional formatting cell via apache poi

My purpose is to copy conditional formatting rules from one sheet to another, where two sheets are not in same workbook via apache poi. For this purpose I am using the following code;

for(int i=0;i<sscf.getNumConditionalFormattings();i++){

        ConditionalFormatting cf = sscf.getConditionalFormattingAt(i);
        CellRangeAddress[] range = cf.getFormattingRanges();

        //getting various properties from source
        ConditionalFormattingRule rule = cf.getRule(0);

        PatternFormatting pattern = rule.getPatternFormatting();
        Color bgcolor = pattern.getFillBackgroundColorColor();
        Color fgcolor = pattern.getFillForegroundColorColor();
        Short fillPattern = pattern.getFillPattern();

        FontFormatting font = rule.getFontFormatting();
        int colorIndex = font.getFontColorIndex();
        Color fontColor = font.getFontColor();
        int fontHeight = font.getFontHeight();
        short ulType = font.getUnderlineType();

        //--------------------------------End of getting------------------------------

        //setting properties from source
        ConditionalFormattingRule newRule = dscf.createConditionalFormattingRule(rule.getFormula1());
        PatternFormatting newPattern = newRule.createPatternFormatting();
        FontFormatting newFont = newRule.createFontFormatting();

        if(bgcolor != null)
            newPattern.setFillBackgroundColor(bgcolor);

        if(fgcolor != null)
            newPattern.setFillForegroundColor(fgcolor);

        if(fillPattern != 0)
            newPattern.setFillPattern(fillPattern);

        if(colorIndex != 0)
            newFont.setFontColorIndex((short) colorIndex);

        if(fontColor != null)             
            newFont.setFontColor(fontColor);   //<-----This line

        if(fontHeight != 0)
            newFont.setFontHeight(fontHeight);

        if(ulType != 0)
            newFont.setUnderlineType(ulType);

        dscf.addConditionalFormatting(range,newRule);
    }

Everything is working fine except I can not set font color of conditional formatting cells in destination sheet.

Two things I noticed;

1st : colorIndex of source sheet always becomes 0 (Though my font color in source sheet is green or red)

2nd : I am getting an exception in line pointed with This line as follow

java.lang.IndexOutOfBoundsException
at org.openxmlformats.schemas.spreadsheetml.x2006.main.impl.CTFontImpl.setColorArray(Unknown Source)
at org.apache.poi.xssf.usermodel.XSSFFontFormatting.setFontColor(XSSFFontFormatting.java:123)
at processor.ExcelTemplateProcessor.copyConditionalFormattingRules(ExcelTemplateProcessor.java:799)
at processor.ExcelTemplateProcessor.copySheet(ExcelTemplateProcessor.java:163)
at processor.ExcelTemplateProcessor.copySheet(ExcelTemplateProcessor.java:128)
at processor.ExcelTemplateProcessor.createReport(ExcelTemplateProcessor.java:117)
at service.TemplateReportService.createReport(TemplateReportService.java:189)
at test.Test.main(Test.java:62)

I tried to search almost everywhere about the cause, but could not find out a solution.

Can you please mention if I am doing something wrong?