But it was conquered by Muslim invaders, not Arabs, but Muslims, specifically the Almoravids [0].
Sweden is not a particularly good example. A better example might be Latvia (or any of the other areas invaded as part of the northern crusades), which was invaded by a group of Catholics spreading the faith[1], Latvia could not be called a colony of the Papacy, but it certainly moved the area into Romes sphere of influence, with all the religion and language that entails.
Calling it an arab colony would be like saying Sweden was a roman colony because they use the roman script.