Yes you can do no line colouring with a digi image. This technique is usually done by stamping in a very light colour then colouring with your medium. I wondered if you could do this with a digital image. I added the image into a Word document and recoloured to Washout. Once it was printed I coloured it... and YES you can do the no line colouring!
So there you are people... digi images are so versatile.