Who Turned Off the Colours?

The Rainbow-Barfing Unicorn virus hasn''t infected humans ... until now! In this adventure, twelve-year-old Xander contracts the mysterious virus of the Rainbow-Barfing Unicorns. The virus gives the unicorns their barfing abilities, but it''s having the opposite effect on Xander, it''s draining him of any colour at all! Xander''s fate lies in the hands er, hooves of Ronk, the most dimwitted of all...