I can't explain it better than Gus Rentfro or Vin Russo however the Barranquilla locale, according to both of those boa experts is what a "natural cross" between a BCC and a BCI looks like. They have traits of both.
The scale counts and some other characteristics make them unique.
The boa is Colombian but anything from common.
A lot of BCI (BI) are dull and washed out. The Barranquillas seem to hold their color pretty well. This guy did used to have a much brighter tail, but even the BCC darken a bit with age.
The boas tend to be hardy and beautiful. They are easy to start and seem to avoid a lot of the early husbandry and regurgitation issues some of the BCC boas go through.
THE COMPLETE BOA CONSTRICTOR and THE MORE COMPLETE BOA CONSTRICTOR (Vincent Russo) are two excellent references if you want to research more.
I highly recommend both of those books.