Of the 25 illustrations there are 17 entirely original illusions and 8 which are inspired by classic ones (such as the duck & rabbit which most people have seen at some point in their childhood). So do you colour them keeping both 'views' in mind, or choose whichever your eye is drawn to first and go with it? You can colour these any way you like, either making one of the views stand out or using a menagerie of colours so the picture stays abstract and demands a closer look.
Trick's art is all entirely hand-drawn in a very quirky, sketchy style. There is enough detail to keep you interested but nothing that could be described as too intricate challenging for the average colourist. None of the illustrations go into the spine or off the page, and some are even surrounded by a border that would look great in a frame. I feel these pages would be ideal in a child's bedroom for them to lie in bed and wonder at, trying to find different ways to look at the pictures.
Here is my finished page, coloured with Spectrum Noir markers. Is it a mouse-eating bird or is the mouse free as a bird, sailing his boat as he greets a fish friend? You decide.
Multiview Illusions Colouring Book by 'Trick Slattery