Siva, Hedon and Yuang all have very different views of humanity’s purpose. Siva’s icor is red, Hedon’s is blue and Yuang’s is white.
Yuang is supposed to reflect all icor working in unity, but red and blue mixed make purple… so Yuang is something else. (This will all make much more sense if you read the Icor Tales)
I am imaging a moment where Laumas mixes Siva and Hedon and discovers he does not get white icor, but he gets purple … which is something else.