Coloratura is the elaborate 'ornamentation' of a vocal melody, especially in opera.

She`s a very soulful dramatic (coloratura) soprano, because she`s got a very big and heavy voice, but she is also very high and agile. Other dramatic sopranos are Jill Scott or June Anderson
A light coloratura soprano has a girlish timbre and is also called a coloratura soubrette like Patricia Petibon or also Mini Riperton.
There are also lyric coloratura sopranos like Lisa Miskovsky or Natalie Dessay.

coloratura mezzo-soprano

lyric coloratura

Coloratura directly translated from Italian means "coloring". In English music nomenclature it refers to elaborate melody in vocal music and in particular opera.