As for red pupils, different individuals and eyes at different angles will reflect light back differently, as would be noted by anyone who has ever taken a flash photo of a bunch of cats where you’ll get everything from yellow through green to red in the very same photo if the cats are looking different directions.
“As for red pupils,”
Yes, and looking again, his eyes are red, they are just very dull red due to the filter.
Just reporting; people can figure out which parts are useful, which not.