Slowly I am making my way through Poly Bernatene’s picture books. The Argentinian illustrator is astoundingly good, and very prolific. His latest book, Ribbit! is, like the others, a feat of illustration. Unlike the others, there is no blue, as in the colour blue. There are wonderful greens and pinks, but for anyone who has seen When Night Didn’t Come, The Tickle Tree, or The Santa Trap, they will understand, Bernatene immerses his illustrations in deep sapphires and lustrous periwinkles. Nevertheless, what Ribbit! lacks in blue, it more than makes up for in the number and quality of frogs, and a friendly, if slightly misunderstood pig.