I want to move to live in colombia?

Since you ae still a Colombian citizen, you certainly may move there It would be extremely WISE to go for a long visit, like 6 months, before making a decision to move there. LIVING there is quite different than just visiting there. You need to know that if you move to Colombia, establish a home and get a job there, that you are going to lose your legal permanent resident status in the US. If you just visit in another country for one year , you need a re-entry permit. If you visit in another country more than 2 years, you lose your permanent resident status. And...if you establish a home and work in another country, even for less than a year, you can lose your status. It would be wise for you to become an American citizen first...and have dual citizenship. Then you could live in the country of your choice and have no problems about returning to the other country as desired.