Grey Font Color Printing

Solution:

  @media print {
      h1 {
        color: rgba(0, 0, 0, 0);
        text-shadow: 0 0 0 #ccc;
      }

      @media print and (-webkit-min-device-pixel-ratio:0) {
        h1 {
          color: #ccc;
          -webkit-print-color-adjust: exact;
        }
      }
   }