Chameleon Chaos (S.w.i.t.c.h.)

Petty Potts, scientist extraordinaire, is losing her touch. The S. W. I. T. C. H. spray that's supposed to turn Josh and Danny into chameleons refuses to work. But the next day at school, the twins suddenly find themselves transformed. Looks like Petty's spray has worked after all! But it shows no sign of wearing off any time soon.?