Major modification to the question. The above behaviour was happening on several forms I created, but I just ran across a form that is exhibiting the proper behaviour. I just need to figure out the difference between them. If anyone has any insights in the meantime, I'd be happy to hear them.

I've set the required fields on a form to have a highlighted background colour on validation when they haven't been filled in. The problem is, when a user does fill in the field, the highlighting remains and is visible to the recipient when the form is emailed. How can I get the highlighting to dyna...