* Rather than leaving it as the default white.
* @param col the background colour to fill
*/
public void setBackgroundColor(Color col) {
Color c = col;
PDFColor currentColour = new PDFColor(c.getRed(), c.getGreen(), c.getBlue());
currentStream.write("q\n");
currentStream.write(currentColour.getColorSpaceOut(true));
currentStream.write("0 0 " + width + " " + height + " re\n");
currentStream.write("f\n");
currentStream.write("Q\n");