Saints' 1967 Helmet Question

SAINT BIGAL said
I would love to see a modern version of the black helmet. It’s a shame that the NFL wouldn’t allow them to wear it for the 1969 season!

I don't have time to look it up now,but I believe the reason the NFL denied the black helmet is Meacom made the change without
notifying the league. it was a marketing issue. Saints merchandise with the gold helmet had already been made.