As long as "red" and "sweet" are not thought of as changing our definition of what an apple is, and are considered only as varieties of apples which are not intrinsically better or worse than others according to some outside value judgment, I would agree with that.
Also a variation would be caramel apples, dried apples, sliced apples, apple pie, etc --- with the point being that these are different ways in which apples can be enjoyed, but (1) not intrinsically better or worse than another, but according to personal taste (how pleasant you feel it to be), and (2) without thinking that these varieties of ways to eat apples are somehow ordained by nature as categories in themselves which we have some intrinsic significance of their own (which might also imply some kind of natural ranking of worthiness).