is this fun and entertaining enough to be allowed?

I looked that up just yesterday and an article said the blind don't see black, it's just nothingness

That is horrible...

"Seeing" is not part of the reality of people that are born blind. However, their other senses (and don't say "their four other senses", we actually have far more than 5 senses) are more developed, as they rely on them. Some blind people can distinguish between colors by putting their hands on some surfaces (lighter colors reflect a lot more, thus are a bit hotter).

They don't really *see* black. Its more like there is nothing to see. You could call it black, but they only call it black because we tell them that what they see

I have glasses. So there has to be half-blind hufflepuffs.