In warcraft 3 red/brown orcs were the corrupted ones, then in wow we had a retcon were green orcs are the corrupted and brown (ma’ghar) are uncorrupted/pure.
In customization we CAN choose ma’ghar 100% red/yellow glowing eyes (they are not corrupted)
and we CAN’T choose green orcs with 100% glowing yellow/red eyes… while they are corrupted
I believe its a bug