I think the real test for heritability for freckles would be to create two parents with freckles and see if their children inherit them. If the freckles follow a simple model of inheritance and are expressed as the result of a recessive gene, and if nobody else in town has them (like if they weren't programmed to pop up on their own in townies), it's unlikely that the children of a single freckled sim would inherit freckles unless, down the line, they married a distant relative who also carried the freckled gene. This is all assuming, of course, that the freckles follow that model of inheritance. It would be easy for them to do so, since there's only two options, freckles and no freckles (for each type of freckles), but we know by now the rest of the genetics certainly do not follow that sort of comprehensible model. If two freckled sims do not produce freckled children, however, I think it's safe to say they're not heritable.
