How to Be a Manichean Catholic?

NPR has an article by a writer named Elizabeth Scalia on why she remains a Catholic despite the pedophilia scandal.

Through 2,000 imperfect — sometimes glorious, sometimes heinous — years, the church has contemplated and manifested the truth that dark and light, innocence and guilt, justice and injustice all share a kinship, one that waves back and forth like wind-stirred wheat in a field, churning toward something — as yet — unknowable.

That sounds a lot like Manichaeism to me. One of the interesting things about early and medieval Christianity is the many ways in which pagan religions like Manichaeanism continued to subsist within the all encompassing embrace of the Catholic Church. Catholicism took up the gods of polytheism in the concepts of saints and angels. It looks like the Catholic Church took up the dualism of Mani as well.

If I were religious, I would personally prefer a religion which was not associated with the greed and brutality of the Roman Empire.