I watched the whole interview on CBS. I can't help but feel horrible for the grandfather. Not in a million years do I think he did this with malicious intent. He had a terrible, terrible lapse in judgement. He'll never recover from this. And as he said, nothing will change what hell he is already in. I wish that kind of grief on no one.
With that said . . .
I think the video footage is likely horrific to watch. The fact the prosecution still went forth after the mother pleaded for them not to is damning. He was clearly negligent, and the law has to hold him accountable. (although I think he is already living his life sentence)
I believe the grandfather thinks he is telling the story accurately. I am sure it happened quickly, and your mind will play tricks on you in circumstances like this -- incredible how the mind is self protecting.
As for being colorblind, what colors does he have trouble seeing? If it is the blue/green then that could have played a factor, but a small one. They said the video shows him peeking outside the window for at least 8 seconds alone. You'd think you would feel a breeze, warmth of hot air, or something else to alert other senses. Maybe even a smell of the pier/ocean or sounds of outdoor activity (it is very loud on the docks on embarkation day.) I cannot place entire blame on window tint. There is a series of of events that lead to this accident, they all linked together. Being colorblind is one link the the chain, not the whole chain.
I wish the family would stop placing blame on RCCL. At some point you have to look inward and realize it was a terrible tragedy, but RCCL didn't cause this to happen. I guess they aren't there yet, and there is nothing else to do except hope some day they will get there.