I wonder if the producers had any consultation from any reputable historians, perhaps Orthodox or Roman Catholic, to have some degree of accuracy? Probably too much to hope for....
The movie's website certainly piques my interest in the final product. I do want to see it. I haven't looked at everything on the website yet, but I did find this:
"Ultimately, the director based the final design of the bishop’s costume on two main conclusions that he drew from history. 'The Bishop of Myra certainly wouldn’t have been dressed in ornate garments as depicted in artwork of the Middle Ages,' noted Hartke. 'His vestments would have been basic and of Judaic influence -- the evolution of which can be seen in contemporary Coptic and Greek Orthodox culture. Secondly, keeping true to the color red was not as much of a stretch as I thought. Historically, red was a prominent color in Greco-Roman society. Adopted by Christians, it became a reminder of The Christ’s sacrifice (or the blood of Christ) and representative of all willing martyrs.'"
The director does seem to be at least somewhat informed about Orthodoxy, both its history and its current practices.