He’s a black horse in all of this

This beauty (black?) was recently heard on the t.v. show “Dancing With the Stars”, as the speaker was describing a contestant who was not favored to win the competition.  The malaphor is a mix of “dark horse” (a potential winner even though not the favorite) and “black sheep” (a disreputable or unloved family member).  The confusion is with dark/black and animals – horses and sheep, as the idioms are incongruent.   Thanks to Jack Chandler for sending this one in!