How can I determine whether a field has been modified but returned to its default value?

[Nfinished]

It seems like isDirty is falsy if a form field with a default value is modified and then returned to its default value by user interaction. How can I detect this? I don't think I can used isTouched because that'll just become true on any blur event even if there wasn't modification.

[Moshyfawn]

How do you "return" the field to it's default value? Via the reset or resetField form methods?

[Nfinished]

This would be in the case of a user manually re-entering the initial value