Boyface and the Quantum Chromatic Disruption Machine  (English, Paperback, Campbell James)

Boyface Antelope has been waiting his whole life to turn ten and be allowed to enter his parents' stripemongering shop so he can take stripes off animals and put them on something different. Like tartan onto badgers, or removing the stripes of zebras to make ponies. On the morning of his tenth birthday he finds his parents ill, and they ask him not just to go in the shop but to look after it on his own! Will he be able to keep the stripemongery running smoothly?