What an utter load of poppycock.
Qualia is a subjective bias and subjective bias is comprised of learnt associations, say for instance you lived your entire life in a world of only black, white and shades of grey and for the first time in your life you see colour, a red ball. Never before have you seen red, your eyes were always capable of seeing it but you just never exposed to it, but now you do see it and for the first time in your life your brain is receiving input from the red sensing cells in your retina.
Btw did you know many animals can't see red, they simply lack retinal cells that respond to that wavelength of light.
Anyway this new input is intergrated into your existing knowledge base by way of association, you associate the colour with the roundness of the ball, the features of the room, your current mood, anything and everything you because you're trying to make sense of it, trying to contextualise it. These associations are your subjective bias, you've only ever seen a red ball so you naturally assume redness has something to do with roundness, you think this ball must be somehow special, maybe all things become redder as they're rounder which would mean this vivid red ball must be the roundest thing you've ever encountered.
In this reality if I asked you to pick the colder colour between orange and blue you'd obviously pick blue, the temperature of the flash cards is exactly the same, blue is only colder conceptually due to the associations we have with it and cold things like water and ice. The mechanisms of this subjective bias can sometimes malfunction, resulting in learning difficulties (hard to make associations) or something like Synesthesia if the associations are made the wrong way or are too strong, indeed it can even be induced, if someone repeatedly hits you while saying "five" eventually merely saying it will result in an automatic flinch reflex because you now associate five with pain.
Back in the alternate universe you run off to tell your friend about this red ball you've seen and when he asks you what red looks like all you can say is round, which makes absolutely no sense to him, how can a colour be round? To confuse matters further what if he goes to see this red ball for himself and instead finds a red cube, well his associations and therefore his subjective biases will be different, he will think red looks cubist.
After meeting up again the two of you get into an argument which progresses to a philosophical discussion, what he saw was red and what you saw was red, indeed even with both objects with you in the same room you can both see they appear to be red but you disagree as to whether red looks more like a cube or a sphere. So the two of you wonder if you're seeing the same thing, you're both seeing the same wavelength of light but what about your personal subjective experiences, what's to say what looks red to you is actually the same red the other guy sees?
Well it's a dumb question.
I mean we can see multiple colours and multiple things that are the same except for their colour so we have the requisite associations to build the concept of colours being interchangeable, but just as someone who has never seen a colour before can neither describe nor understand the description of a colour because they lack the requisite associations so too are we incapable of seeing colours as anything other as we have conceived them to be.
Look at something blue, study it, now tell me something about it that's not a learnt association, explain to me as if I'd never seen blue before what blue is, obviously it can't be done, to educate me you need to create the right associations in my brain but you can't because there's no objective standard of blueness.
Indeed our perception of colours is totally wrong
Colour is a wavelength of light and the progression from one end of the colour spectrum to another is linear, there aren't regions of more or less wavelength, white light isn't comprised of a spectrum of several independent colours, we just see it that way because of the different wavelength sensing cells in our retina, the stripes in a rainbow are an illusion as a result if our inability to perceive the in-between colours.
We have four visual pigments, the mantis shrimp has twelve, we can't even imagine what they see except in abstract terms of light wavelengths or artificial visual filters which translate part of what they see into the colours we can perceive.