Very light colors may appear transparent making for a muddy result. the iron on transfer will appear clear in those areas, showing the color of the fabric instead of white. and printers don't actually print white ink, they just assume the background color of your paper is white and ignore white ink. You'll be printing the iron on transfer with your home printer. When considering an image, keep in mind that light colors may not produce results like solid, dark colors. First and foremost, you'll need an image that you'd like to transfer.