Although this patch has been around for a while, it is now finally available for AT&T users as well. Once applied, it offers an easy way for Galax7 S8/S8+ users to eliminate the red tint issue.
http://www.notebookcheck.net/Samsung-Galaxy-S8-and-S8-on-AT-T-get-the-red-tint-fix-update.219844.0.html