Board Thread:Theories & Speculation/@comment-1512913-20141028151348/@comment-3279282-20141031165140

Yes, I think it refers to that, too. There's also the word 色濃い irokoi used, which means strongly tending to. So maybe it's better to translate the last sentence in a way that reflects that the clans powers "strongly tend to Yin or Yang" (Sharinga, Mokuton etc.).