The publishers have just sent me this updated version of the cover. They’ve made it more colourful and changed a few of the illustrations. (One of the illustrations they chose before gave away too much of the story!) I love the coloured squares in the cover. They are so reminiscent of the 1960s. I remember a house over the road from ours that had coloured panels on the walls in these pastel colours, and we had a set of metal cups in a mixture of colours like these.