Color Palette

I've never seen one of these, nor do I know if they exist, but it seems awfully specific and plausible to me. This is a LEGO molding color palette, presumably for checking color accuracy of ABS lots, and I very much want this piece of utilitarian coolness in my collection. Not to diminish the coolness of this brick version by Anthony SÉJOURNÉ, in fact, I'd like one of these too.