title: Apply POI Custom color using 'Hexadecimal Color Codes' provided
body: <p>I am currently using HSSFColor/HSSFPalette and XSSFColor to set the Existing/Custom Colors. Implementation is as follows : 
  <em>for e.g. 
  font.setColor(HSSFColor.WHITE.index); for HSSF 
  or 
  cs.setFillForegroundColor(xssfColor); for XSSF</em> </p>
  
  <p>I want to pass parameters in both the above cases for "Hexadecimal Color Codes". </p>
  
  <p>Like : <em>for HSSF: font.setColor()/font.setColor(getShortIndexFromHexColorCodes()) 
   for XSSF: cs.setFillForegroundColor();</em></p>
  
  <p>Is there any way out to do the above thing, where I can pass Hexadecimal Color Code and the colors are applied in HSSF and XSSF. </p>
  
  <p>Please guide me and thanks in advance:) </p>