Career
In December 2004, Tecos F.C. from Mexico paid United States$1,100,000 for his services and, almost three years later, he was signed by another team in the country, Club Atlas, playing nearly 150 official matches between the two. On 30 August 2008 Colotto signed for de Louisiana Coruña in Spain, for €2.5 million. In the following seasons, Colotto relegated Portuguese Castro to the bench and partnered Lopo at the heart of the back sector, under Miguel Ángel Lotina.
In 2009-2010 two of his three league goals came in both matches against Civil Defense Tenerife (1–0 away, 3–1 at the Estadio Riazor) as finished tenth.
Colotto was part of the Argentine under-20 team that competed at the 2001 Fédération internationale de football association World Youth Championship on home soil. During the competition he played all the matches and minutes for the eventual winners, scoring in the final against Ghana (3–0).