Over The Top Meaning

(idiomatic) Bold; beyond normal, expected, or reasonable limits; excessive; outrageous.

Example:   He has always had an independent style, but don't you think purple spiky hair is a bit over the top?
2015 February 23, “Oscars 2015: 10 things we learned”[1], The Guardian (London):
  You might have expected a pop star known for shows in which she has someone vomit paint on to the stage to come up with something similarly over the top for a live rendition of The Sound of Music. But Gaga chose to take the traditional route.
2007, Bruce Jenkins, "The Chronicle Sports Columnist Blog," San Francisco Chronicle, 26 Aug,
  Myers went over the top in the clubhouse, berating a reporter who questioned Myers' terminology.