READ BY JOANNA LUMLEY. Celebrate Lily's birthday with Blue Kangaroo! READ BY JOANNA LUMLEY. It is Lily's birthday and she decides to celebrate with a themed party, based on her favourite colour - pink. There will be pink balloons, pink presents, a pink cake, and even the guests will be asked to wear pink party outfits! Poor Blue Kangaroo worries that he is the wrong colour for Lily's party...but what should he do? Would Lily really prefer him if he were a pink kangaroo?