The more I think about this, the more I'm convinced that this doesn't merit discussion in most cases, Deb. Go ahead and propose data edits when you see this checkbox being used inappropriately.
There's a reason that this happened. The checkbox originally was called "Good growing season color" or something like that. It was so vague that people tended to check the box for anything that wasn't a bare stick during the growing season. A discussion of this undiscriminating approach led to the rewording of the checkbox description to say "Unusual foliage color." A lot of the ones you run into now are simply left over from the time when the box had a different name, and they don't necessarily signify unusual foliage color. It's a good idea to weed them out.