Colors of the Wind only goes up to the B above middle C. It's an extremely low piece and I don't think it's right at all for this audition. (I'm assuming you're either talking about the auditions for Ann Marie or Cinderella) I suggest looking into "Someday" from The Wedding Singer. It's adorable, bright, and the ending chorus mixes up to an E. Best of luck!
www.tinydancer5.tumblr.com