Constitución Política de Colombia 1991
The Political Constitution of Colombia of 1991 (Spanish: Constitución Política de Colombia de 1991), is the Constitution of the Republic of Colombia. It was promulgated in Constitutional Gazette number 114 on Thursday, July 4, 1991, and is also known as the Constitution of Human Rights. It replaced the Political Constitution of 1886 and was issued during the presidency of the liberal César Gaviria,[1] with ideas from the also liberal Luis Carlos Galán.
https://www.alcaldiabogota.gov.co/sisjur/normas/Norma1.jsp?i=4125
Colombia Government 
A government organization
Colombia
atencionciudadana@senado.gov.co
http://www.secretariasenado.gov.co/index.php/constitucion-politica
Yes - it has a direct download link or links
https://www.alcaldiabogota.gov.co/sisjur/normas/Norma1.jsp?i=4125
Unclear
It is the constitution of a country, it is likely to be freely available.