Venoma's medallion is blue, even though it was green in previous episodes.
Venoma's pink arrow strikes Blue Ranger in the sternum, but when he demorphs into Preston, the arrow sticks out of his heart.
The Serpent Zord cockpit's symbol had part of the symbol copied and placed over it in an odd position.
Venoma fights the Power Rangers for her freedom from Madam Odius, but it's never made clear what restrains her against simply leaving Madam Odius beyond an intimidating personality and possible return of her medallion (which Odius likely won't return no matter what).