code: private void drawPixels(Color color, long fileOffset, long length) {
  		assert color != null;
  		drawPixels(color, fileOffset, length, 0);
  	}
docs: Draws a square pixels at fileOffset with color. Height and width of the
  drawn area are based on the number of bytes that it represents given by
  the length.
  
  Square pixels are drawn without visible gap.
  
  @param color
  of the square pixels
  @param fileOffset
  file location that the square pixels represent
  @param length
  number of bytes that are colored by the square pixels.