Haiti is over 90% Christian.
Lot of voodoo and Santería in Colorado? I know there is some Santería in Denver. Voodoo is a syncretic religion, as I noted in my keywords. That is, it is a synthesis or combination of the polytheistic pagan beliefs and practices of several West African tribes, and Roman Catholicism. Some of those African “gods” are identified with the dark side. I think the best way to describe the religious practices of most Haitians would be as a cake. The frosting, which covers most of the cake, is RC, but the cake itself is voodoo.
It is to Christians. Conjuring demons and spirits is specifically prohibited in the Bible.
The tribes of the Old Testament kept combining pagan idol worship and superstitious sacrificial rituals borrowed from other religions with their true faith too. If memory serves me correctly, God was less than approving.