Little Unicorn Is ShyMr. Men meets The Color Monster with a unicorn! in the fourth book in this series that taps into the current trend of books about childhood emotions, this one about shyness. A little unicorn's rainbow colored mane shifts to a single color when he's feeling a particularly strong emotion. When he's feeling shy, like when he needs to speak up in class or meet someone new, his mane turns purple. But when he repeats a breathing exercise, his rainbow