I wish my long-term stash was in clear bottles like the samples in this experiment, but I'm not willing to re-bottle it either. Since it was all argon-purged when it was originally bottled by NN, re-bottling now can't possibly do it any good.It may be useful in the future to transfer your nic concentrate to clear glass bottles, storing them in a solid container. A little light exposure when opening the box will be worth the ability to see the color of the liquid over time. It also allows you to verify the lack of color when initially rebottling into glass.
That said, if I were buying nic in bigger, plastic bottles I and re-bottling it myself, I would definitely use clear glass bottles to allow me to evaluate its color every once in a while without having to open it.
And I wouldn't bother wrapping those bottles in any light-blocking materials either. My little dedicated nic freezers don't have lights in them, so I'm confident it's quite dark enough in there when the door is closed.