In this review we take a look at the Marco Square C820 Coloured Pencils Pastel Shade. I have long admired the Holbein coloured pencils and in particular the 50 set of pastel shades they provide. However, about a year ago, give or take a few months, I noticed the Marco Pastel Tone Colored Pencils and knew that they would be an interesting set of pencils to review.