A Free Product with Attribute

This is a free product that is also on special.

This should show as having a price, special price but then be free.

Attributes can be added that can optionally be set to free or not free

The Color Red attribute is priced at $5.00 but marked as a Free Attribute when the Product is Free

The Size Medium attribute is priced at $1.00 but marked as a Free Attribute when Product is Free