alt Hacker NewsYou really don't need a concept of a colour or a shape, and it's a fairly typical academic fallacy to assume you do.
That's directly confusing experience with categorisation and labelling of experience.
If you touch a very hot object your nervous system will pull your hand away before your brain registers what's happening. The qualia of pain are pre-conceptual, preverbal, and precranial, and your consciousness only catches up later.
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reflexes have nothing to do with qualia. you can differentiate objects without knowing what is a triangle and what is a square, or that this colour is red. but I think qualia as commonly understood involve concepts in a way that means they are not immediate experience in some kind of cartesian sense. We speak of them as categorised. certainly the way people commonly speak about them they are very carefree about invoking "the qualia of a horse" or some other specific object.
Surely this implies exactly the opposite - you don't register the pain, don't feel it, until after you pull your hand away. It's a reflex action in response to heat. Qualia require a brain to process sensory input.