I have a theory that might warrant a mini disclaimer in your post, because otherwise your info seems to be accurate.

I have a feeling these colors have an RGB "range" that needs to be taken into consideration. What that effectively means is that I have Snow White (example), but another person's Snow White may have different RGB values so if we both feed the same number of feed in the same order, we will still end up with different colors because we end up in different ranges. So what I am saying is one person's Snow White may differ from another person's Snow White in value so I think that's worth noting.