I have a Swedish visa issued for 1 year, multiple entries, duration of stay 90 days. I used this visa to stay 82 days in Colombia. Can I use it again to stay in an EU country? It is valid until March 2019.
Yes, you can use the visa to visit the Schengen area or the other EU countries that honor Schengen visas (not the UK or Ireland). The fact that other countries unilaterally offer visa exemptions for those who hold Schengen visas does not affect the use of those visas in the Schengen area.
This assumes that there's no other reason preventing you from using the visa, of course. Such reasons could arise regardless of whether you use the visa for a visa exemption in Colombia.