Actually I beg to differ on that.
The statement "Apples are red" implies ALL apples are red.
If you wanted to say that some apples are not red then you would need to include the word some into your statement otherwise the existence of green apples does make the statement false.
Nah, I don't think the all is implied. If you wanted to say that, then you'd need to include the all as: All apples are red.
I mean, cars are red. Cars are white. Cars are black. None of those statements are false.
As it sits, if you claim the statement "apples are red" is false, then what you are saying is that apples are not red, and that's just wrong, cause some of them are.
Or at the very least completely meaningless.
Not meaningless... ambiguous.