The videos are fun to watch, but I don’t think those glasses really show the colors - they somehow simulate it.
The cochlear implants transmit real sound. Takes a lot f adjustment, though.
I have a sort of relative (cousin-in-law?), deaf from birth, who had those implants done; and then had them removed, as the world was far too noisy.
I don’t know if they do or not. I’ve only watched 6 or 7 of them and the reactions were always powerful. It seemed the older the individual, the more powerful the reaction.
It just makes my day to watch a baby get the implant and watch their face when it is turned on and they hear mom or dad for the first time.