Also they were rather expensive, even if they had done what they claimed to. They became more available about the same time you could get N95s easily. I’m the kind of weirdo who thinks an RGB face mask would be cool, but I didn’t want to spend $150 (iirc) on one.
EDIT: based on comments on the article, they were $99. Still more than I’d want to spend on something this silly, but not that unreasonable - if the mask did what it said it did.